I’m so scared.

So, my period was suppose to come Wednesday the 10th, me and my boyfriend had sex December 12th- 5 weeks ago. And then we had sex the other day, I don’t remember the date because we stopped and he didn’t finish because a family emergency came up. Both times we used condoms, and December 12th when he was about to cum, he pulled out as well and jacked off to finish, just because of my anxiety. I’ve been really stressed (I think, I can’t really accept it) and yeah. Last month my period was 8 days late, I took a pregnancy test the 10th, it was negative and I took one the 15th, both was negative. They were both the clearblue digital tests- I don’t have anymore tests, but I can get more. The condoms didn’t have holes in them, believe me, I checked. I haven’t been taking my medicine accordingly either, it’s 5 mg of lexapro. I haven’t been taking it accordingly because I’ve been smoking pot everyday since January 1st. But I took my medicine this morning. I’ve been cramping lightly (idk if I’m making myself cramp by thinking about it or what) and Thursday I threw up during class, came home and had a fever of 99.8 and then 30 minutes later it went up to 100.4, achy muscles, headache, and felt sick to my stomach as if it were a stomach bug. I still have a fever as of last night, it was only 100.3. I got really worried because I only threw up once but felt like I was going to throw up all day, and then for the next two days I had the same feeling. I’ve been eating a lot lately, I haven’t really gained weight, my weight fluctuates throughout the month, the other day I was 113 and now I’m 112.6. So I’m guessing it was just a stomach bug but it scared me because of the fact that I threw up. Please help, I’m literally flipping out. Should I go get the pink dye tests or what? Is it just stress, the pot, and not taking my medicine or am I pregnant. I literally cannot be pregnant. I can’t go get a blood work test done either, considering I’m only 15. I’m not having any pregnancy symptoms, just backaches (which I always have), headaches (because I’m sick), throwing up (sick), runny nose and mucus because I’m sick. I’m just so scared ;-; my boyfriend is solely convinced that I’m not pregnant and stuff. But my period is now 7 days late. And as I said before I was late last month, and My period has been a couple days late for the past couple of months. I’ve been having a little bit of white discharge as I usually do throughout the month, So I don’t know what this is ;-; don’t give me attitude either, I’m scared so I don’t need snobby remarks as I’ve send on some posts.