Anyone ?

I have been seeing some jelly like substance in my underwear and I believe it’s not normal, most times there is odor. When I sit down on chairs, I leave sweat stains which is super embarrassing. Luckily, they tend to disappear within 30 seconds. Does anyone get this, or is it just me? If not, what should I do. I don’t think it’s a UTI or bacteria infection because this has been going on for years. No, the substance is not lumpy