That coud be a change in your period the same thing does happin to me and it normel aswell , mine change every 4 mounts now i dont think you are pregnant .
3 days ago? Way too early to check if you are pregnant. Your period was only 15 or so days ago. The cramps you are having now, well they might be from ovulation. Ovulation is where your body gets ready to release an egg and chances of you to become pregnant. I would say, if your trying for a baby...start it up, you might be in clear way of ovulation and increases your chances of getting pregnant. Now if your not ovulated, then I would say your period might be early...or for some many women have cramps 2 weeks before an expected period. But honestly, sounds like you might be ovulating...it explains the cramps.