Not sure what it is

I started my period yesterday but today I was dealing with my flow like I normally do but I noticed a weird smell. I don't know what it is. At first I considered it was BV (bacterial vaginosis) but I looked it up and they said it could be recognized by a fishy smell which isn't what mine is like. It just smells like somethings off and I don't know what it is or what to do. I'm 16 and my moms out of town so a Doctor visit isn't really available rn. Could it happen to do with the fact that I had sex for the first time a month ago? This is the second period I've had since then (I'm on the pill) and this is the only time ive noticed this.