Thanks for writing in to Healthcare Magic!
You are in elderly gravida age range and if possible you should avoid getting pregnant because this age group has more incidence of complication.
With poor quality of your husband semen it looks unlikely that you would become pregnant by normal process.
if you still want to be pregnant then you can take help from an infertility
specialist and assisted reproduction can help you.
If you have any further query please let me know I would try to answer it for you.
Wish you a great health!