What are some of the negative side effects of having a molar removed?

on thursday morning, i had to have one of my molars (#19) removed due to continual problems. i was given an antibiotic and pain reliever along with post op instructions on what to do after surgery. i've been doing as the instructions say, but unfortunately i'm not feeling relief. i've noticed that i can hardly open my mouth, and for the past 2 days, i've had a horrible taste in my mouth almost like a rotten, decaying taste. i do have some swelling on that side, and i've also noticed a lump underneath the extraction site. i forgot to ask the nurse for a copy of the papers i had to sign prior to surgery, these included possible things that could happen, and i remember being concerned with only one; dry sockets which i have experienced before. i'm planning on calling my oral surgeon tomorrow, i don't think what i'm experiencing right now is an extreme emergency. does anyone know of any other negative side effects from oral surgery? what else can the oral surgeon do? in addition to my rx meds, i'm alternating ibuprofen/tylenol and doing the salt water rinses, and as of today, using warm compresses. any advice/suggestions would be very much appreciated. thank you.