Any info?

So I haven't been on this app for a while I figured I would just relax and let it happen. Last month my period came a week early and was pretty heavy. TMI sorry. But this month my period is a couple days late and I have been getting dizzy here and there. Thought I was going to pass out. My boobs normally hurt a week or two before af but this month they didn't start hurting until my period was due. My nipples however were very very sensitive and sore and erect all the time. Took a test and it was negative... my stomach has been hurting every day. Im confused as to if this is just a late period or not.. my periods before last month were all pretty much on point?? Did anyone else experience this?