Right side cramping?

Brittney • Graphic designer turned CNA trying for baby #1.
My period is supposed to start Tuesday and I just got my first two positive pregnancy tests (first ever). I've been having dull cramping on my right side for a few days. Not sharp pains, no bleeding, but definitely there. Is this normal? Implantation? Stretching??? I've been trying for a year to get pregnant and I'm afraid something is wrong.