Feverish, pimple like pain in left

I got a pimple like pain in my left armpit, but it's not swollen like a pimple. I think it's internal, like a swollen lymph node. This started two days ago. But i don't know if it's related or not but today I started having symptoms of fever: Loss of appetite, Fatigue. Also the previous night I suffered from night sweats to which, I had to take a cold bath in the middle of the night, to cool myself down. So I'm really confused as to what exactly I'm suffering from. I really can't make any visits to a doctor as I have my semester exams going on. But i did visit my college health centre, they provided me with some paracetamol and an antibiotic. They told me to come back if problem persists. Please respond ASAP, as I still cannot concentrate on my studies and have these symptoms in episodes(i'm stuck between as if I should bite the bullet and continue to hold off the pain until my exams get over or I should visit a professional doctor immediately)