hi im a 15 year year old virgin and my question is kinda long. so at the end of january my period was a week late and it was light and it was the same in february. march i think it was early and light but before january my period hadn't always been on

time and not light but no too heavy. but since january i haven't really had a normal period. they've all been light and either late or or early. and from about january to march i had menstrual cramps then i was fine. but about a week ago i've been having them everyday and really bad. for some reason i've been freaking myself out and telling myself i'm pregnant idk because i googled symptoms of like pregnancy and labor and i have a lot of the symptoms. another thing is that i've always had clear skin but for about 3 months my acne has been really bad. and one more thing, in about january i weighed 129 and now my scale says i weigh 138 but i don't really look different. and i'm just freaking out. can someone please help me figure out what's going on? thank you