Could Headache And Nausea Be Due To Excessive Alcohol Intake?

Hi, I m 18 and sadly drank Saturday night and apparently went way above my limit because I blacked out and can t remeber most of my night. I guess I threw up that night but slept fine. I woke up feeling just awful with the headache and throwing up every 30-60 minutes until about 3pm on Sunday. I have never done this and can usually stomach a decent amount of alcohol. Well it s Tuesday now and I ve felt nauseous every day since that incident. I don t throw up my my stomach gurgles and I get crampy but that may be due to my period that I just started yesterday. I have never had a bad period though and I have had it for a couple years now. Plus, on the back right side of my head, in a quarter sized spot, I have a pain in my head, I m not sure if that could be from drinking cause I ve had that off and on with the nausea as well since Sunday morning. Could this be alcohol poisoning that I still have, or could someone have slipped me something? Sorry for all the questions but I m kind of a hypochondriac so I start looking up stuff and getting worried...