Is there a Small Possibility of Pregnancy with Retrogade Ejaculation?

[Tamarin87]

My boyfriend has a condition called retrogade ejaculation, which he says his Urologist did as he has a very high sperm count.

We had unprotected sex two weeks ago, and after round 1, he went to the bathroom and urinated (whereby the sperm passes through the urine), and thereafter we went for round 2.

I have read up on retrogade ejaculation, and all articles say that a man can only impregnate a woman with IVF or other assistance from a medical Doctor. I want to know, is there a small possibility that I could have gotten pregnant? Is there a possibility that when he urinated, some of the sperm stuck around and were passed into my vagina during the second round?

I have been experiencing pregnancy symptoms - nausea, frequent urination, and I am 5 days late with my period.

When I checked my ovulation calendar, I was ovulating on the day we had sex.

I just want to know if there is a small possibility that pregnancy might have occurred. Even if there is only a 1% chance, that still means it is possible.

PS. I will be doing a test over the weekend.