Watery discharge that has a smell

I feel like I have watery discharge every day, and I’ve noticed that it has kind of a cheese smell or cleaner smell to it after a couple hours, and ESPECIALLY after sex, (you’re gonna think I’m gross for this but idc) but it’s a huge difference between how my underwear smells and how my actual vagina smells, it’s mainly my underwear that will have these smells and not necessarily my vagina. I’m not sure if it’s just because I have a physical job and I’m just sweating a lot I do wear the same jeans almost every day or if it’s an infection of some kind that I’m unaware of. I don’t have any other symptoms other than dryness during sex :/