Aborting because child has birth defects

I feel so guilty. 6 years ago, I was so happy I was finally pregnant. Then came the screening for birth defects. I went through with them thinking I was going to have a perfect little baby. Turns out, my child had Down's syndrome. I decided that I couldn't raise a child that had this. It was too much work, she wouldn't be "perfect", and she wouldn't lead a normal life. I aborted this baby at 14 weeks. To this day, I cannot forgive myself.... Mainly because I have been trying for years and years and YEARS for another baby, and nothing. I feel like it's payback. Did I do the right thing? (In no way am I trying to convince girls to NOT get abortions, YOUR body, YOUR choice) has anyone else felt this way?