I have been on this for over a year now. After the third shot I thought the spotting would stop but it hasn't. I, too, feel burning pain during sex that I feel is associated with this. It doesn't hurt once its in. I read somewhere that it is possible to be allergic to his semen and secretions but I'm not sure that's it. Whenever I have even a slight bit of yeast in my system of course I know that I'm sensitive and its gonna hurt the whole time. But this is different. I'm turned off by the constant dread of having sex and the low libido it brings. I decided to go off the Shot. I hope this helps for someone. I was told to take ibuprofen
3 times a day for 2 weeks and it would stop. Well, for me it stopped only for week and came back.