Late Period

Hi everyone

I’m 19 years old and my period is 3 days late. I have had sex since my last period, probably about 3 times. We’ve used condoms every single time and we always check to make sure there are no rips before and after. I’m never usually late on my period so I’m kind of freaking out. I have gained some weight lately which some sites are saying might be a cause of my late period. If anyone has some encouraging words or advice that would be greatly appreciated. Thanks everyone.

Update: got my period! Not pregnant!!