less discharge??

so recently (past couple months) I haven't been getting my regular discharge. I only get some discharge the few days surrounding my period, otherwise my panties stay dry. I've been drinking more water these past couple months so I don't think it's a dehydration problem. I'm eating fairly healthy as well. I don't use soap, only water down there in the shower because soap can change your pH. I don't have a clue as to why I'm getting less discharge. any advice/help? thank you.