A little worried

Okay so I was pleasuring myself and I took my panties off afterwards to change them and i noticed an odd smell. I know it sounds gross but i smelt my panties and I don't know how to describe the smell. It isn't fishy but It doesn't smell like bleach either. It's like somewhere in the middle. I know I'm not pregnant because I got my last period after my ex broke up with me and I haven't made contact with any male genitalia since. So I don't know what could cause the smell.

Also I have felt no discomfort what so ever in my vagina area at all and my discharge was normal