Ok so my Ex Boyfriend and I were together for almost a year he was my first one acually. We would always have Unprotected sex because we didn't like using protection and if I was to be pregnant it would be okay because my boyfriend acually wanted a baby. Well throughout that year that I would have sex with my ex I would never get pregnant which was shocking because 3 of my best girls had gotten pregnant by just the first time they had sex but they used protection, it was crazy. And I'm still confused about my situation, because everybody says having unprotected sex has a higher chance of getting pregnant.My ex would always say he never "came" inside of me during our intercourse but there was this one time when during the process he acually told me he "came" inside of me, I was like shocked and thought that I could have gotten pregnant, weeks past I would eat a lot more my period was late, I thought I was pregnant but then out of nowhere my period came and it was heavy, I had bad cramps it was just horrible and after it ended I felt normal I started to eat less so I thought the part when I would eat late was just my munchies I just couldn't believe it. I was somewhat upset because I did want to have a baby and so did my ex. After a while I started having Symptoms like my breasts would hurt my belly would always be itchy I would feel like throwing up, I would have bad mood swings, my friends started to notice my cousin noticed and she thought I was pregnant but I told her it was impossible because I had my period 2 times already, then she told me some women have period when there pregnant but there not really periods. I started to have doubts and so I went to doctors and they said I wasn't pregnant. But I just still don't get why if I would still have sex without protection. So then weeks past by my ex and I broke up. It was sad but time went by and I had a new boyfriend but with him I had protected sex, the condom broke one time, but I didn't get pregnant. We broke up after a while. I didn't want boyfriends nomore because I would just get to attached and get hurt. So I left that for a while. There was a party one day at one of my guy friends house, one of my good guy friends was there and we eventually got tipsy I still remember because I wasn't really drunk or nothing but I was high, my friend and I had sex that night and we used protection, 2 months had past and we had sex again he wanted to date but I denied I didn't want to deal with anything at the moment few days had past I thought I got pregnant because my period was late but no I went to docters and it was just a irregular period. Months past I didn't have sex for a while, one day I ran into my ex boyfriend who was my first, and we started talking again, he wanted to date but I denied. But we started having sex and this time with protection because I didn't want to get pregnant or anything by him, then one day he didn't want to use protection and he asked me out I said yes because I still had strong feelings for him, so we had sex and he "came" inside me, 2 weeks past we had sex again, but with protection and the condom broke, so we kept going having unprotected sex, he said he "came" inside of me so after that day I was hopeing that I would get pregnant. A few weeks past my period was late I was happy because I had a chance of being pregnant but at the same time I thought it could just be an irregular period but I had a higher chance of being pregnant because my boyfriend "came" inside of me 2 times. A couple days later my period started I couldn't believe it, I was upset and well I'm not pregnant. Im still with my boyfriend and we have unprotected sex most of the time but sometimes with protection. So I'm going to talk to a doctor to see if I'm unfertile, or I just can't have baby's at all. But I want to know what you think?? I'm just so confused right now

Thanks for taking the time to read this.