Period not here

I’m 18 and I’ve been getting my period pretty regularly for awhile now but it’s been 2 days and it hasn’t come yet while I’m writing this it will be day 3. I had sex in February on the 17 but we used protection and we were pretty safe about what we were doing. Idk if I should be worried about it because I know sometimes periods can be late due to like stress and stuff but still😬👂🏽 looking to hear you guys suggestions.