so I gtta question if anyone can answer.. my period has been irregular so I came off my birth control and have only had sex 2 times unprotected after that but now... I have been extremely tired... tender boobs and mild cramping in my lower abdomen.... the first pregnancy test I took it showed a really faint positive like I could have almost imagined it but my friend seen it too.... but every different test I took after that showed negative (I took them all the same day I'm too anxious)... but I'm still having the same symptoms... is mii hcg levels too low or what?