Hello and welcome to HCM,
Missed abortions are common in the first trimester so don't feel upset. It no way indicates a problem of fertlity in you and your husband.
Presence of fibroids and polps do not directly affect the fertility
They can cause a difficult implantation
and especially when the size of the fibroid and/ or polyp is quite large. But it is an uncommon cause.
You have conceived once so it is confirmed that your ovaries are functioning well.
Go for a follicular scan after consulting your gynaecologist.
Follicular scan will monitor the developing follicles and ovulation. If the ovaries are ovulating well, conception can be tried during the time of ovulation.
I hope I have answered your query.
If you have more queries, please feel free to ask.
Thanks and take care.
Dr Shailja P Wahal