so everytime I got to the restroom my underwear is slightly wet. there is no color and it doesn't…

so everytime I got to the restroom my underwear is slightly wet. there is no color and it doesn't really smell. I assumed it was urine at first but they're wet every time I got to the restroom. I was checked for a leak 3 weeks ago and didn't have one. is it possible to have one come on so sudden? this has been going on for about 3 weeks as well.