Help please

Shelbei
Hello ladies so I haven't had my period for two and a half months now, and I've taken multiple tests and had two or three questionable positive pregnancy tests and alot of negatives, and I just assumed they were evaps, but I've had some weird spotting last week twice after Intercourse, and it was light pink and only there when I wipe.. I've been feeling very light cramps down there not like period cramps and no blood, I'm confused on what could be going on.. my mom said she went her pregnancy with me until 4 months not knowing due to not being able to get a positive test and my sister's pregnancy she went to 7 months with no positive test Even after she found out about it.. could that problem be passed through my gene pool? Please help any input is welcome as well as attached photos of questionable tests. Thanks ladies and baby dust to you all 💖