Any suggestions?!

Maeara • I am a mama to a beautiful baby girl ❤️

I was supposed to get my period in the 24th but I am 4 days late ( I had sex 2 days before that, the 22nd ) . I had take 2 pregnancy tests and they both came out negative. Here’s the catch, I just recently started back on my pill the 17th. Is there any chance that the pill is making my period irregular ?