Why am i being so mean to him.... ;( ?

Me and my boyfriend arent getting along at all... I keep being very cold towards him .... Like its because ive got alot on my mind and ive been stressing so much these pastfew weeks abd also ive just recently taken the morning after pill whuch has ****** up my hormones...! And everything my bf says Nnoys me and i keep snapping at him... And i just chucked him out of my home :/ for not wanting to go out on this nice day witg me.... Whats wrong with me :(