[missBailee]

Last month I stopped taking my BC and had my period(been taking it for a year now), I thought id wait till my next one was over to continue taking it(was late on buying a refill) but it hasn't come yet. It's a week late from today(may11th). I have had a lot of unprotected sex with my boyfriend and a couple days ago there was a brownish discharge for a day and I've had bad abdominal cramps and felt fairly bloated for a while. Maybe I'm just fooling myself but is there a possibility Im pregnant? Don't mention taking a pregnancy test, I don't even have a penny to my name and my boyfriend keeps telling me just to wait for my period so he won't buy me one. Nice man aih? Please help
Additional info: I'm 105p , 5ft4, 17yrs and I currently have a chest cold if this info is useful. Also just stopped taking a UTI medication a couple of days ago.(took it for 10 days)