Do u think im pregnant? im 22 and want your advice

Hello,
Hopefully you can offer me your advice,
I am a 22year old.
I have only had sex twice in the last month or so.
my periods are always irregular, but always every 4- 8weeks
I had sex on the 12march with a condom,
then i had a normal period on the 24th march.
I Had sex (using a condom) on the 30th March

On the 9th April I had a unusual period like brown discharge and clotting which was very light and lasted maybe 5days.
I am a flight attendant, so always feel tired, but i feel worse than usual.

i am also moody, have A FEW unusual pimples.
I have been busting for the bathroom frequently over the last few days to urinate. i did not see the condom break, is it possible it did and i am pregnant?

i am also very bloated, but i always am from flying and i feel uncomfortable with my body, which i am usually confident about. please offer me some advice. kellie