Why do I have blood between my periods and a weird smell?

Anonymous
Hi girls, this is literally so embarrassing but m really anxious about it. I had a boyfriend and his parts used to always smell a bit weird, a bit fishy. Like i loved him so much that i tried to think that maybe it was just the sweating before we got home or something. I believed this too cause he told me je was very paranoid about his health and always uses protection and do check out at the clinic from
times to times. For most of our relationship we slept together with condoms, but one time two months ago we did it without. ( like for 5 min not the whole time ). And i think one week after that it started to be weird, one day after uni i found blood in my panties and two weeks after i got my periods but they lasted for almost 15 days. And my parts smelled weird too, like it’s exactly the smell he had on him. I slept with him one time after this and i had blood again.. And this month i had my periods normally but 4 days after i had blood again.. and still this weird smell i have since two months..
I looked on internet with all the words and combination possible, and can’t find anything that causes blood spotting unless chlamydia but it doesn’t even do it like it happens to me. I couldn’t say anything to my mom but now m going to see a doctor tomorrow. I just wanted to know if it happened to someone else too cause this shi is scary
( by the way don’t tell me to ask the guy what he had cause i don’t talk to him anymore )
Why do I have blood between my periods and a weird smell?
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