Just lost my virginity!!

So... I lost my virginity to my boyfriend three nights ago, we've had sex 7 times in the past 4 days and 2 of the occasions have been without a condom! He didn't cum inside of me and we were very careful! When I finger myself I have been getting a bit of brown discharge :/ I have also just recently started the pill, can someone relate or tell me if I should be worried?