confused

I'm confused I don't think I'm pregnant but everyone around me think so today I'm suppose to start my period but I haven't but Ive been cramping none stop couldn't sleep last night I think it's still time for me to start my period but since people around me are thinking I am only because I started to throw up yesterday for no reason after I ate a burger and was turning in my sleep last night and had to pee often as well I'm trying so hard not to get my hopes up but anyways I downloaded this app that will let you hear a heartbeat but I thought I heard something but I think my mine is playing tricks on me but right now I still feel like throwing up and cramping ugh idk I don't wanna take a test or go to the doctor only because I don't wanna hear that I'm not pregnant maybe I already have my hopes up so confused 😐