When to test

So I know y’all aren’t doctors. But before I waste my time or money... I got my nexplanon removed March 9th and started bleeding that weekend but Monday-now my boyfriend and I are having unprotected sex. He never has finished inside of me and I know that precum is totally a thing. Just have a feeling that since I got off the birth control and my fertile window is open that I could really be pregnant. I’m such an impatient person and I didn’t know if 1-2 weeks after would be to soon to test. My boyfriend goes on vacation next week and I would want to surprise him when he gets home.