Do i have mono? PLEASE ANSWER?

Okay so this is really really bothering me and the faster i get a answer the better i will feel a lot better. or worse.. Im a 16 y/0 male. I had a girlfriend about a month and a half ago. we kissed a lot but i did ask her recently if she has ever had mono and she said no! So it started last week, i would wake up and go to sleep with headaches, but they often came after smoking marijuana..The headaches were in my eyes and forehead area. They went away by the weekend, and i had a cough over the weekend with a mild sore throat, usually woke up with it from the air being dry and drank some orange juice to take care of it. But sunday morning i woke up and my throat hurt along with my ears. I went to the doctor, he said it looked somewhat swollen, along with the glands in my neck and he gave me penicillin to take care of it. its been about 6 days and the swelling has went down a little bit but the pain went down immensely. I still have a minor sore throat and ear aches/ head aches. I have a really bad stuffy nose, earlier in the week the mucus was extremely bloody. and now its more greenish yellow. My cough has also persisted. I havent had a fever sense sunday either, but i have been taking sinus pills and dcongestion's earlier in the week it was also very hard for me to sleep but now its a lot easier to sleep through the night but i often wake up early due to a dry mouth and sore throat. I have no stomach pain at all. or dizziness. I havent had diarrhea or anything like that either. And as of last night coughing brings a really bad taste to my mouth i was thinking from the mucus in my nose. I hope this is a sinus infection, but my friends girlfriend was just decided to have mono today. i never shared a drink or anything with her but i have shared blunts with her boyfriend.. yet he has no sickness. Please give me some feedback. Its midterms in school and missing more school would be fatal to me due to im failing as it is. Thank you alot for any feedback to my question.