Could I be pregnant?

PLEASE HELP I'm 17 and I've been having a pregnancy scare for like 4 months now, (please don't tell me to take a test it's impossible for me to get one where I live) and I was wondering is it possible to have a period while pregnant? Like with cramping and clots and everything. I have a regular irregular cycle (every 43 days) ever since I had my period when I was 14 and now my period seems to be coming every 30 days or so... Could I be pregnant? I still am my regular weight (113 lbs) and am not sure if I am showing.. Please help! Oh also my boyfriend had his dick in me for less than 10 seconds, I've never actually had sex.