I dont know whats wrong with me

Linsay
I've been trying to get pregnant for 4 months I didn't get my period for 3 months I thought i was pregnant but today I went to the bathroom and there was so much blood like more the usual there so much it worries me.. I wanna get pregnant so bad but idk what else do my boyfriend always says to be u probably can't have babys :( it stresses me out..