Thank you very much for this forum and everyone who post their solution. It helps me a lot. So I also want to share my experience and remedy in detail as much as possible.
I am 27 female. It all started when I had my first and worst UTI. I was prescribed with antibiotic for 5 days which change my BM habit. I do not usually have constipation but one day, I happened to pass something hard on my stool. My stool is not in big bulk, but something hard or like a glass or maybe bone or seed was on it. Then after that, every time i have my BM, I am in pain, like knife-slicing pain after passing a stool. I did not take it seriously at first until I have blood after passing a stool. I panicked, did some research. I thought it was cancer but I think it is either anal fissure or hemorrhoid. It took me 4 weeks before I have a courage to consult a doctor as I don't want someone poking on my butt


I was given something for the inflammation, procsedyl cream and stool softener. I was told to prevent constipation at all cost and have a high fiber diet. This is my journey to my remedy:
For the first two days:
I was depressed. But I changed my diet. I have fruits and vegetable diet. I took the stool softener, prosedyl religiously. I did not take the medicine for inflammation as I know that I can still take the pain, I just dont want to cause anymore problem with my stomach. I have a sensitive stomache. I noticed that the stool softener create rumbles in my stomach and causes some pain. I stop using it after two days, as I know it might create some problem in the future. I took prosedyl cream religiously instead.

For the next five days and counting:
I make a list of every food I ate. I do some research of all the food that soften stool. For fruits, I took, papaya, watermelon, wintermelon, mango, and apple on day at a time. I know that every stomach reacts differently. For my case, apple cause me hard stool so I stop eating it. Papaya makes my stool mushy. For vegetables, I ate bitter gourd, winter gourd, broccoli, cauliflower, peas, papaya, chayote. It all makes my stool soft specially broccoli and cauliflower. My meal is always with rice, pasta and bread before. I changed it to multi grain one, brown rice, multigrain or vegetable pasta and multigrain bread. It is hard to transit to a strict and straight days of high fiber diet so I also ate chicken, fish and meat. But when I do, I make sure I have the ratio of rice/pasta:meat:vegetable:fruits to 1:1:2:1. I also drinks lots and lots of water. I read that transition to high fiber may cause constipation specially to multi-grain and oats, so drinking a lot of water will help. I also drink prune juice after every meal. I hate its bitter aftertaste but I take it at small portion by one small cup. I love chocolate and I ate dark chocolate once in a while. It also soften stool, but avoid the sugar.
For the treatment, I always have BM first thing in the morning that I have no time to prepare my anus. When I eat a lot, I have BM in the morning and evening. At the first day of my medication, I noticed I have a very rough first stool to pass even though the next coming stool are soft and mushy. I am still in pain and it still leads to bleeding. I though that lubricating your anus and rectum is one of the important thing to do. Something that my doctor did not tell me. So from my research, I tried coconut oil as they said it has antiseptic property, why not use it for lubrication as well. I lubicate my outer skin, then my hand, then inside my anus. It is gross, but I know I need to do this. At first 2 days, it was still bleeding, I could feel my fissure as series of small cuts 1-inch deep from the outside. The next days, I tried to lubricate more. More is good. Then after my BM, I clean and put coconut oil again. I do this for lubrication so when I put procsedyl cream it would go in smoothly. I do this in the morning and evening.
Lessons learned
1. Be patient. Be very very patient.
2. Follow doctors advice but also follow what your body needs.
3. High fiber diet is a must. No shortcut. Perseverance is the key.
4. Eat something you love once in a while. If it doesn't soften stool, eat lots of fruits and vegetable. I love chocolates, I ate dark once and it soften my stools.

5. Do not lose hope. Do not get depressed for too long. Read this forum, then move on.
6. Have someone or family to share your transition in diet. When I cannot take the vegetables and fruits anymore, my fiance will eat the same food I eat for every portion. It makes me feel better.

Now, I am on my 4-day streak with no blood and pain is getting less and less. I plan to continue on my routine for the coming months. I know that we should prevent constipation at all cause. I plan to stop the cream after one week, as I read that it cause thinning of the skin lining. But I plan to continue on the coconut oil. I hope this will help someone as it helps me a lot. I will give update after a few months. God speed to all of us.