Guilty

I didnt find out I was pregnant with my daughter until I was about 30 weeks along. I was taking the pill so my periods had long since stopped. I only gained about 20 pounds total and never had any morning sickness, cravings, etc. I hold a lot of guilt towards my pregnancy because I did have an occasional drink here and there (never enough to be drunk). My daughter was born perfectly healthy, and she is now a smart, thriving, toddler. However I still can't help but feel like an awful person. I dont like to talk about my pregnancy because every time it gets brought up, I get the same question "how did you not know you were pregnant for soooooo long??" I feel like an idiot. It has taken me several years to stop beating myself up about the whole thing. When someone brings it up (like my family) I spend weeks feeling depressed again. I just dont know when I'll stop feeling guilty about this. My husband says I shouldnt feel this way because our daughter is healthy and fine, but he obviously doesn't carry the guilt that I do.