I’m loosing my mind

Last month I got two periods 10 days apart from each other (both lasted 7 days). Now I’m supposed to be on my second day of my actual period and I haven’t gotten it yet I’m feeling pre period symptoms like sore boobs and been experiencing cramps for the past two days. I was worried about the possibility of being pregnant because I also have some white discharge and I saw online that it’s a sign of pregnancy. So I took a test and I’m negative but I can’t stop worrying about this. Has this ever happened to anyone else and should I be worried ?