Surgical abortion at 16.5 weeks due to fetal abnormality . worried about risk of future infertility from d & e procedure and excess bleeding ? are these complications rare and is it rare to need procedure repeated ? so worried , mostly about damage?

It carries a minimal risk of infertility so you can say it rare. By PubMed: "while there appears to be a general consensus that there is no association between abortion and infertility, amongst the publications that do exist there is nevertheless evidence to the contrary." The primary cause of fetal abnormality will dictate if you may need the procedure repeated or not.

Four decades ago, I spent time in a foreign country where BCP's were rarely used, and pregnancy termination was the usual method of family planning. The women had several over their life & most still & the number of kids they wanted. I know testimonials lack scientific validation, but that thriving population never gave it a second thought. I think you will be fine.