I had my iud removed on july 18 the day before i had it removed i had unprotected sex is there a possibility that i can get pregnant?

Yes: You are at risk of pregnancy especially if you were ovulating that time.

Iud out and sex: yes, but unlikely. Best to wait about 2 weeks then check home pregnancy test. Best to use check first thing in the morning when you get up. If negative, recommend check once again in 1 week. If both neg, then you should not be pregnant. Again risk is very small but present. Hope this helps. Best of luck.