Yellowy discharge for a few months

For a few months now I've been getting like a yellowy discharge and like a smell, I'm not saying it's a great smell but it's not that bad, maybe like the smell of pee. I thought maybe I wasn't wiping good enough but right after I get out of the shower, it smells. I can sometimes feel it on my panties and even after they get washed they leave a yellow stain. I'm not sexually active so please don't say it's an STD, what I'm thinking is maybe yest infection. Oh and it also does not itch or hurt or anything like that. Have not gotten my period in awhile but this started just a few months ago so I don't think the two are linked.

Also I can feel little tiny bumps like above my Clitoris, I think there pimples because I have a medium size pimple that's broken but still there.