TTC at 21

soooo, my boyfriend and I are trying for kids. Now before you say anything I know we haven’t been together long but we’re both 100% sure about eachother, we’re literally perfect for eachother. Anyway. I met my boyfriend on a cruise March 6th and we both went home on March 11th. He’s from Sweden and I’m from Canada. 20 days later and I’m in Sweden! We’ve been having unprotected sex multiple times a day, every day since we’ve been together including our time on the cruise and he has finished inside of me each time. This last month was the first full month I’ve been with him period to period although I’ve been ovulating 3 times (whilst on the cruise and when I arrived in Sweden and then this last month (current cycle)) each time resulting in my period. I’m super disappointed this cycle cause I really thought I was pregnant and we were really hoping I was. I even thought I had symptoms like extreme gas and bloating, fatigue, sore boobs and specifically nipples which is uncommon for me, even constipation, mild heartburn, emotional. I’m really hoping I can have kids and that it won’t be a struggle to conceive but I’ve always had a feeling I can’t have kids or that maybe it will be hard for me. I have heavy periods and cramping and endometriosis/ovarian cysts/woman problems run in my family on my moms side which gives me anxiety but everyone on her side of the family could conceive no problem 🤷🏼‍♀️🤷🏼‍♀️🤷🏼‍♀️ HELP!