Having to pee after sex

Sarah • I am 27,happily married for 7 yrs, 2 kids Bailey (7 yrs) and Axten (7 mo) and 3yr old puppy named Spike
Does anyone else have to pee right after sex? My hubby and I are TTC and I always have to pee after sex.. I heard this decreases the chances of fertilization. Anyone know if this is true or suggestions on what to do. I always pee before but if I orgasim i have the urge to pee..