Hi there. Here is the thing about condoms, pin pricks are kind of a fallacy. When a condom doesn't work, they almost explode. If there were a tear, you'd most likely know hon.
doubt you are pregnant, but take a home pregnancy test on the day your period is due or after to make sure. good luck
He might have caused a tear in the condom. Or if the condom was too small it might cause a pregnancy. But you are showing some signs but its best to do a pregnancy test.