Ive only slept with two people, one was my ex and the other is my current boyfriend, I've got the IUD - merina, so we don't use condoms. My current boyfriend gave me chlamydia when we first starting sleeping together as he didn't know he had it, it's been 3 months after we had the treatment for it, we're both due for anther test to see if it's cleared up, I'm just really concern as I'm bleeding after sex with him, I think we're both clear. But I know this is stupid but could the size of his penis be causing me to bleed? He is very large and most of the time it's painful when we have sex. At first we need to wait a while before he can go in properly then once he's going for it towards the end it really hurts in my lower abdomen area, recently I have been bleeding after sex, could his penis be the reason why? I've researched it and it's common to bleed with the merina but I just find it suspicious how I'm okay then once we have sex I start to bleed. Any information will be helpful as I don't want to go back to the gynaecologist unless absolutely nessecary