Hormones

I just started the pill levora two weeks ago and am late on my period which I think is normal because I'm not suppose to get af until the end of my pack maybe it changed me up but anyways I am very hormonal crying then kranky and annoyed been snapping on people and I don't mean to and then want to cry for doing it lol I hope I'm not pregnant I took a test and it was negative but had an accident 8 days ago while only being on the pill for a few days. Hope it's my birthcontrol but I acted like this when I was prego before! Anyone have any advice I want to be myself again but my hormones are taking over ughhhh!!!!