I had Botox the day before Thanksgiving. You can find my post Botox post here in gory details. The simple answer is yes - it got much worse for me before it got better. I had days where I had to crawl to the bathtub after my morning BM two weeks after my Botox because the procedure injured me so badly.
However, I am now ten weeks post Botox and I am beginning to think the C word: cured.
Hang in there - it took eight weeks for my fissure to heal enough to where I could finally see the light at the end of the tunnel.
Count your recovery in weeks and not days - and stay positive. Post here regularly- it will help you. We are all here to help. It will get better.