not pregnant

Tatianna

So I had sex on my ovulation day unprotected. I'm a very fertile woman I already have two accidental children. So I feel like I'm pregnant I'm having all the symptoms and everything and I know my body I know wat it feels like to be pregnant. But my question is why are the pee and blood tests coming back neg. could it be because it's still to early. But with both my other children I tested positive at 4 weeks. Also I bled around the time I was expecting my period.but I was that it could be implantation bleeding and I bled through my whole pregnancy with my daughter so what do I do?