I conceived baby #2 by only having sex once, so it was definitely possible. I'd try to wait until 11/12 DPO to test, although it's not impossible to get a positive at 9DPO it'll be very faint and even look negative. I got my positive at 9DPO, but I thought I was 13DPO, but I ovulated later xx
I got pregnant having sex only once. It does happen.
Test no earlier than 11 days past ovulation. It’s still early at 11dpo so if it did come back negative doesn’t mean you aren’t pregnant this cycle. Totally possible to get pregnant having sex one time. If it gives you some reassurance with my oldest I had sex once during my fertile week which was my ovulation day and got pregnant x