RH factor question

Nicki • Momma to June Sophia 🌈🧸🌸

Hello all!

I’m assuming my doctor did the testing for me but never mentioned anything... I’m O+ and my husband is O-.... would my doctor tell me if i was at risk of the Rh factor? I’m currently 19 weeks pregnant and last week was our anatomy scan all looked great! But I haven’t had my blood drawn since I first found out I was pregnant and at 11 weeks for genetic testing. Should I call my dr? I’m not sure how the thing factor works. Any insight would be great!