Pain down there..

Any ideas as to why my clit and vulva have been really sore the past couple of days? There is no stinging, just very sore pain. I’ve also noticed an excess amount of discharge. Could the soreness be caused by a yeast infection? I haven’t had sex recently as my bf and I have been long distance for a few weeks now. The only thing I can think of that’s been different is I’ve been eating unhealthy the past week or so, and I usually eat very strict. Any suggestions as to how to heal or what this could be are welcomed lol