Smell?

Hi ladies I have a question! I'm definitely asking my gynecologist, but I'm unable to see her until June so I figured I'd come here for help.

I started birth control for the first time last summer and had some awful side effects like migraines and awful cramping.

So my gynecologist switched my pill prescription to one where I only have a period once every three months. It's been decent, less side effects. However, I've noticed that since starting it in March, I've had a weird smell down there? No weird discharge and I make sure hat my panties are cotton and I take care of myself and shower once a day. I thought at first maybe it's from sweating at work and at the gym, but I can smell it even when I'm just lounging at home. No burning or itching or discharge. Just smell. Could my birth control cause it??

Thanks!