Hi Chelle
Welcome to the forum. You poor thing, having a baby to look after at the same time as experiencing fissure pain and then surgery. I hope you have lots of family support.
It took me eight to nine months to completely recover from the LIS op. I'd read accounts of people who'd recovered in a matter of days or weeks and wondered what was wrong with me. However nothing was wrong with me, the operation was a success, it's just that I took longer to heal. During the healing period, there were many setbacks when the pain got worse again and I feared all sorts of things but this doesn't necessarily mean that things aren't progressing well. For instance, scar tissue from the incision site can take a few months before it ceases to be raised, thus potentially contributing to irritation with bowel movements in the early days. Also there's some swelling from the surgery for a while too, which again can make it uncomfortable once a bowel movement's passed. If you're constantly having diarrhoea, it may be that you occasionally form minor fissures. As you've had the LIS op however, these will heal. In the early days, I was constantly forming minor fissures with bowel movements - the muscle tone is reduced with surgery, but I think it takes a while for the muscle to relax more. After all, if a muscle's constantly exercised, as it is with spasm, the muscle tone increases. When the constant exercising of it stops, with the LIS, the tone then starts to decrease. I still had relatively high muscle tone in the early days, and formed minor fissures with each bowel movement. However the CRS said that as I'd had the LIS, I wouldn't form any more major fissures and eventually, I wouldn't form minor fissures either, and this proved to be the case. He said that the anus is a complex mechanism, and it can take a while for it to settle down again once something disrupts it, like a fissure or surgery. Diarrhoea too is irritating to the anus, as I'm sure you know, so if you can get your stools firmer, perhaps by tweaking your diet, it would be good. I know it's difficult though if you're anxious.
As regards painkillers, can you not ask the GP for more powerful prescription painkillers? I don't know if you're breastfeeding, but if you are, this may be a problem if it's passed on in breast milk. When I was recovering from the LIS, I was taking both paracetamol and Diclofenac, which is a prescription NSAID. You'd want to avoid Codeine or any other opiate containing painkiller as they tend to be constipating, which isn't good when recovering from this kind of surgery, but there are stronger painkillers than paracetemol that can be taken in conjunction with it. A word about Diclofenac however. I was taking it very long term - during the time I had the fissure and post operatively as well. I was careful to always take it on a full stomach but despite this, it eventually started having an effect on my stomach making me feel queasy and I had to stop taking it. Luckily by that point I didn't need it any more. However I can't even take over-the-counter Ibuprofen now as it makes my stomach queasy, so can no longer take the NSAID class of painkillers. However you probably wouldn't need it for that long as you're healing - and there are other types of stronger painkillers, as long as they don't have an effect on breast milk, if that's a consideration.
Don't be too down - setbacks don't mean that you're not progressing to a cure. Sometimes in the appointments I had with my CRS post surgery, he had to reassure me "You ARE cured" because I couldn't believe it because of what I was still experiencing. But he was right. Eight or nine months post surgery everything became normal.
You could try to contact your surgeon if you're in a great deal of pain and want her to look at you and get her input. They may be able to give you an earlier appointment. You mention blood with bowel movements. I never had a great deal of bleeding with my fissure, so couldn't comment on that, although I know that other people do get blood. If this is something you're worried about, why not contact the surgeon? The hospital may have given you contact details or if not, it seems possible to search for most surgeons on line and get their work contact details or those of their secretary.
All the best and let us know how things go.