It bothers me that you, a 13-year-old, are home alone right when you are starting a new medication, before anyone can see how it affects you. These medications affect each person in a different way, and from what it sounds like, something needs to be adjusted.
It's probably too late for this post to be any help, but in the future, if you are in a situation like this, and are worried that your medication is causing problems, and you are frightened, the thing to do is to call your parents. If, for some reason, that isn't an option (?!), then page the doctor. Their phone number should be on the prescription bottle. Or call the pharmacist, whose number should also be on the bottle.
When they answer the phone, you say, "This is [your name]. I just started this medication, and it's making me feel strange. I'm 13. I'm home alone, and I'm worried." That way, you don't have to feel weird about saying the wrong thing, or anything like that, because the person you are talking to will understand what's going on, and be able to take it from there.
Please talk with your parents about this.
Edited: I see now that this isn't a new medication, but one you are going back on. I don't know anything at all about going on and off medication, except for the fact that it should be under a doctor's supervision. Maybe you didn't go back on it as gradually as you should have, but that's a conversation for the doctor.