Exactly...trim. Even if you get completely smooth... a day or two later there's stubble, and with stubble comes little pimples and it's not a good look. Anyway, pubic hair plays an important role in sex and frankly I think it's weird people who choose to look like little girls naked! LOL
So...get yourself a trimmer. I pinch my husbands beard trimmer sometimes. Use a length guide...whatever suits. Try a number 4 or 3, and as someone said get your BF to help.
My husband loves doing it sometimes...and those trimmers vibrate you know
Then...everything is tody, but no regrowth problems, no stubble, no razor rash. It's by far the best option IMHO