Just a quick question. I suffer with PCOS but my symptoms have improved a hell of a lot, I've had a…

Just a quick question. I suffer with PCOS but my symptoms have improved a hell of a lot, I've had a regular period every month this year so far which I'm happy about. I'm not yet on any contraception due to a sexual condition that I have called Vaginismus which means that intercourse is impossible/near enough impossible and EXTREMELY painful. Anyway, although I haven't yet overcome that issue- again, the symptoms have improved and I've been trying to have intercourse with someone for a while now. His penis can probably go about halfway inside of me on a good day! Apart from that probably about 2 inches will go inside there (so frustrating!) Besides all of that, he's ejaculated inside me (sort of) about 2/3 times in the space of a week. I'm guessing it's wise to take a pregnancy test of course in about 7/10 days. But what I wanted to ask, is what the chances are of getting pregnant in this situation? I'm guessing not as high but still absolutely possible. And when would you recommend that I take a pregnancy test? Thank you in advance!