I ovulated about a week ago, and during that time had unprotected sex twice without the p/o method. I started lightly bleeding today kind of on and off. Definitely not heavy enough for a pad, but if I push like to have a bm it drips out a little. Can that happen with implantation? I had no idea with my first lo because it took 2 months to even realize I was pregnant

Could be an off period. Implantation bleeding is highly disputed by professionals, so no idea if it's valid.

The pull out method is not a valid means of contraception. Pulling out means you're trying to conceive. Are you? If so, why is your partner pulling out in hopes of preventing pregnancy?

Like everyone else you'll have to wait and test. If you think this period is off because of the bleeding, then wait a week, 2 is better, then test using first morning urine. If it's negative, wait for your next period. If you miss it, test again, or see your doctor for a more valid blood test.

Good luck.