2nd period in a month? Maybe implantation bleeding? Is my cycle outta wack? Idk help!

Ok so April 1st I got my period after being almost 2 weeks late and it lasted 5-6 days like normal. Well Thursday night me and my bf were going at it and before we did the do I had to pee. Well there was blood in my underwear so I went home (a very worked up and pouty lil lady might I add). Well it started like a normal period. Red, little clots and minor cramps. Well this morning it was brownish and light flow then just brown. Now it's like its gone. What is going on? And before the question comes up, me and my bf are very active and use the pull out method (not smart ik but we both hate condoms)