I'm laaate: Who has sex to speed up their flow?

Disclosure I haven't done my research based on my experience. So, I noticed that I was not regular until I became sexually active(BC:only condoms). When I broke up with my partner I went back to being "irregular" until I had sex again.

In my last relationship of 3yrs, I was constantly under alot of stress causing it to set my moon back(I'm late but never pregnant) I would ask my ex for sex to get my hormones going and speed up my period. Yes, I do feel like this worked but haven't heard anyone else share the same experience, can you weigh in?