Itchy

So I don’t know if I’m allergic to a tampon or if it’s something else. But I started my period the other day and used a diffrent kind of tampon ever since then I’ve been really itchy it’s been three days now but there isn’t any discharge (other then period) but I also don’t know if know if it’s because I shaved down there or not.

I don’t know what to do do y’all have any home remedies??