First let me say I am speaking from experience and understand completely how you feel, as I had an abortion 7 years ago but I am sorry to say the problem does lie with you.
You sound like you have not yet come to terms with your decision to have the abortion. This is natural, it took me a long time and I was on self destruct for a good 2/3 years after so it is only the last 4 years I genuinely have. You have make peace with yourself, and take a good hard look in the mirror you may not like what you see but unless you do then the feeling that people are 'getting' at you will never go away. It is hard, I know, as you do that some people do not approve but that is something you have to deal with and accept. Another thing I have learnt is that although it may be fresh in your mind, it won�t be in theirs, they have moved on. I promise you it will not even have occurred to them it may upset you. It is after all nothing to do with them or their lives especially after two years, and rightly so. It was your decision and you have to live with consequence I�m afraid. I think you do need to talk to someone, a support group or try counselling again rather than keep causing yourself this heartache.
Take care and if you need to talk let me know xx