“Do I need to seek medical care?”

It's currently Wednesday, and Saturday for my 17th birthday I had a small party with 3 of my friends. I had some alcohol 3 cans one was like an 8% one was 9% and one was 6% I believe. After that was beginning to kick in me and one of my friends went to go smoke. I ended up smoking most of it. Obviously I ended up getting completely wasted and I ended up puking a lot that night but never fully blacked out. The next day I had a hangover and maybe an hour after waking up starting puking a good bit which is normal for a hangover but its Wednesday now and I'm not fully better. I still am having nausea and stomach pains and aches, I have been burping a lot, slight lightheadedness/disorientation. I hydrated a lot on Monday. I can still eat and drink and hold it down but I do feel worse and burp more after eating and drinking now. I just want to know what's wrong and why I still feel like this. If you can help I would highly appreciate it.