I am 24 and on the pill but i had a 2 day period

So there are a few parts to this answer i will number them to make it easier.

1. The most concerning thing is that you don't take the pill at the same time each day. The pill is only 99.9% effective with perfect use so because you are not taking it correctly you could very well become pregnant. I suggest if you cant take the pill properly switch to another form of birth control that is easier such as the shots or even condoms.

2. If you got your period then you are probably not pregnant. In fact from my experience on the pill my periods were weird with some being shorter or longer than others. However! this two day period could actually be implantation bleeding which occurs in the very early stages of pregnancy. Implantation bleeding is a small amount of blood that is either a peachy colour or a dark brown. Implantation bleeding is only very light bleeding, not enough to use a tampon and not enough to fill a pad. This bleeding usually occurs around the time your period is due.

So i suggest taking a home pregnancy test and seeing your doctor because if you are pregnant you should immediately stop using this pill as it can harm and unborn featus. 

hope this helps and good luck