regret from 6 years ago

My now husband and I were only together for a little over a year when I got pregnant. I just turned 22 and I wasn't ready. So I had a medical abortion. We didn't have good jobs, we were living in his moms basement "apartment". We just weren't ready. I still hold on to so much guilt and wish I never did it. I'm a completely different person than I was 6 years ago. I would love some advice. I know it's in the past but I just can't get over the fact that I did that and wish that I didn't. Please no mean comments, I feel horrible already.