My guess is that you’re looking at this as a sexual problem when in fact it’s a relationship problem. Yes it could be a fear of having to undergo another abortion, but if you’re taking every precaution to prevent an unintended pregnancy, that risk is minimal, and since it seems you were desirous of having sex in between the abortion and three months ago, it doesn’t seem likely that the abortion is the cause of your problem. Stress could be a factor, but you didn’t mention that you were under a lot more stress now than you were three months ago. The one thing you did say was that when your boyfriend approached you for sex, you have no interest. That’s why I say it’s the relationship that is the real source of your lack of desire. Analyze your relationship and see if you can’t spot what’s behind your loss of libido. If you really can’t, then you should go to see a counselor.