Hi,
Welcome to the ehealthforum. I am really glad to help you out. If your HSG was okay, I believe you can go ahead with the pregnancy. However, please discuss the same with your treating gynecologist before you plan for the same.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care.