Is it true if you don’t have sex for a while and have sex your period may come late

So last time i had sex was in May of 2019 we had protected sex but had to take plan b due to it braking, period came late but it came, now in March the 2th i was 3 days past my ovulation and we only did oral things and before he toched my area he washed and dry them to make sure he didnthave any pre cum, when it came to doing it we only did one stroke and were to scared to continue. So now I’m 4/5 days late and read that if you havent had sex or do have sex your period comes late i wanna know if that’s true or not cuz I’m kinda getting worried thanks so much for reading ❤️