You are 18 days late for period your boobs are sore around the nipples you are tired alot you are urinatin loads you have white discharge and about a week and a half before your period you was bleedin?

I think you may be pregnant! Or just stressed or swithing birth controls...any way id take a test or SEE THE DR! The blood before your period was due may have been "implantation bleeding" or maybe just your period???