Welp.....feel like giving up....

So i have hypothyriodism & been diagonsed with it for 15 years now. I believe this is the reason im not getting pregnant. My period is all whacky because of my hormones. My dr. Wants me to do a pelvis ultrasound. Which i have already done before & they said everything is fine besides my utrus is tilted. I know whats already guna happen. They will have me do all these crazy tests tp see the problem & they are not going to find anything. Im tired of feeling shitty because i cant have my own child. I have a step son & he bothers me for a bother all the time. Yet never happens. I have always wanted babies since i was a baby. Babies are in my heart.....makes me feel like im going to break into tiny peices every month it doesnt happen. Yet i see all these people who dont even care/or want kids & they pop them like nothing! I just dont understand. I cry to much anymore & im tired of feeling like this. Just need to vent.....thanks for listening..