Ttc & peeing right away after sex

M
Hello ladies. We have been ttc for the past 5 months & nothing yet. I feel like this month is our month & we will finally concieve. But theres an issue, i am prone to UTIs and my doctor told me i have to pee right away after sex. What is yall opinion on this? How long should i wait to pee? Or should i not pee at all? HELP!!