Baby😭😭

Mamas I need help.... I’ve been ttc for almost 4 yrs now and nothing I do works. I’ve been tracking my period for the 4 yrs, I used ovulation strips, I’ve had sex from the time I got off my period til it started again, I’ve tried every other day til my period, I’ve tried every 2 days til my period and still nothing. I’ve been looking online at Ava bracelet, pre seed everything. I’ve stopped thinking about it because at this point I’ve came to the conclusion that I can’t get pregnant (I’ve even went to the dr and they said nothings wrong). So mamas help me plz