is this normal?

I drank 3.5 shots, then 4, then 5, and finally 6.5 consecutively for four days. On the last day, (6.5) I threw up 3 times and felt bad, but not really a strong headache the next day. however after that I have had mild to medium strength nausea on and off, and a mild headache almost daily since. its been close to 3 weeks since and I have not had any alcohol since and still get pretty annoying bouts of nausea and headaches. This was my first time drinking in any reasonable amount. Never been drunk before the first day. Also the last two days I was using bourbon. Any tips on how to stop feeling nausea and headaches? Please advise.