I started my period on June 17 and ended the 22. I had sex the 23 and 26.. I had bad cramps and nausea the next day and it went away. I'm on the pill, and he pulled out both times. But I got a new pack of pills and started on a Monday instead of Sunday because my mom didn't tell me to for other wise... could I be pregnant? I also am having light pink blood, I heard that's a sign of pregnancy or could come 15 days before your period during ovulation.

"pulling out as you know seldom works and only lowers the sperm count ( if and when he does pull out on time) Pills can be effective ( if taken properly) but are not 100 percent effective.
So can you be pregnant, of course,

The timing does not seem idea, so most likely not, but there is no way to tell yet.
You as 1000's of others this month play the waiting game till it is time for your next period. You have to wait and see if you get it or not, then test.