Pregnancy Scare

My boyfriend and I had sex this weekend and he came in me multiple times without any protection.

We took plan B after. But the next morning it happened again. I didn’t want to take plan B multiple times within 24 hours because it can mess up your body. (Yes I realize I need a better form of birth control, I have an appointment with my doctor next week to get back on birth control)

But I realized just now that according to Glow I was ovulating this weekend and my chance of pregnancy was very high.

How soon can I take a pregnancy test? Do I have to wait till a missed period? Or 10 DPO? What’s the soonest I can test?