Is it weird I’m starting to think I’m infertile?

So I’m currently writing this out of hurt bc i gave in and tested at 11 dpo. (AF due 12/16)

🙄. Me and my fiancé have been TTC #1 since June. I got off of the implant and we’ve been trying ever since. I have ovulation pains, which i thought was ovulation. Also, my periods are pretty heavy ( first 2 days i go through supers every 3-4 hours, idk if that’s heavy but it is to me) i also have a 28 day cycle. I honestly thought this month was our month bc i had brown spotting on cd 17, or 6dpo. I’ve been extra tired and nauseated so i gave in and tested today and got a stark white negative. I’m 18, (don’t worry me and my fiancé are totally independent) but with every one around me having babies and even everyone in my family having kids under 20 it’s extremely frustrating. Any ideas to help or cope with what’s going on? Any response is appreciated 💖