Could I be pregnant ?

My last period was April 22nd-26th, my boyfriend and I (both 19) have had sex about 4 times since. For the past two days my discharge has been pink and increasing in color each day. At first I thought it was just a little off white and would sort itself out, but today its a blush-almost brown like color. I’m not great at keeping up with my ovulation cycle, but I think it just recently ended. I am on the pill, and have been for awhile — I take it everyday and haven’t missed in months. Now, the last time we had sex (3 days ago), it got a little dry towards the end - so I attested the discoloration to that, maybe irritation or something.

This may sound stupid or super paranoid, I just have no idea what it means. (I never had any good schooling on any of this)

Thank you guys in advance.