Should I B concerned? I'm scared? Question about hydrocodone&oxycodone both have tylenol. 5/500&5/325?

I'm prescribed hydrocodone acetaminophen 5/500 usually for my ankle problems and I'm getting ankle surgery on Friday so my doc gave me a scrip for oxycodone acetaminophen 5/325. Well I had one hydrocodone 5/500 left and decided to take three of my 5/325 oxycodone. First off is it ok to mix the two and is that to much tylenol in one dose. Two days ago on Saturday I took four of the 5/325 oxycodones early in the morning then that Saturday around 11:30 pm drank a lot till like 4 am. I didn't drink or take any at all yesterday and then today Monday I took what I said above around 5 and it's now like 11:30. Well I'm scared because the past like 4 hours I've been sick to my stomach and then like the past two hours I have been extremely drowsy and I read that it is not normal to have extreme drowsiness after taking Tylenol but I only had like 1500 mg today so I didn't seen so worried but Im just scared if the past three days could have all added up and caused liver damage. I don't want to go to the ER and sound stupid plus I hate the ER I live by because I've been there way to often and the docs and nurses are just not friendly. O forgot to add I also have a very mild strange feeling in my throat but idk if that has any significance.