Outercourse before period, but I got my period and after a month later Its late

My last period after we did outercourse was on February 25, and the last time we did outercourse (clitoris rubbing and masturbation) was on February 23, before I had my period. However, I still got my period after that. I was supposed to have my next period on March 25, but it didn’t come on that day and hasn’t come until now, April 5.