What are symptoms of blocked fallopian tube

Hi, It's nice been a part of this forum, though as a first timer. I got married as a virgin but got to know after several attempts for a year to get pregnant that my fallopian tube is blocked. It sounds so unbelievable to me because my husband and I got married as virgins. Also,from the day HSG was done on me, I've been bleeding for 7months. I went back to my doctor who advised I do another HSG,pelvic scan and pap smear. I have done pelvic scan which reveals that my womb is in good condition. I don't see the reason why I should go through another HSG. Please, I need your advise.