Swollen Vagina...what?!

Ichigo • I have one daughter. I'm also pregnant with my second. Unmarried.
So for the past few hours, I've had the  urge to pee, but I haven't passed much urine. I thought maybe it was a urinary tract infection...until I squeezed and pushed a little...and out  came the pee! Which is when I realized..my vagina has swollen. Including the inner parts. Then I looked it up..and that's apparently a pregnancy sign (that test didn't agree with me nor my signs..ugh) but yea. This ever happened to anyone? I'm seriously curious!