Health Organization for Pudendal Education

Magnesium in Epsom salts turns off pain receptors.
I soak in this each day before bed, PT or activity. It turns the burning off for up to 2 hours (for me it does).
I use at least 2 cups in the bath tub.
Walgreens sells 6 lb. bags of it for 3 bucks.
Cheap and better for us than pills.

Good luck

Epsom salt also really drys out your skin. I don't know where exactly you are soaking, but you might want to be careful of that. Vulvar dryness and cracking can lead to a whole lot of other problems.

INSTANT OCEAN SEA was recommended to me by my Urgo/Gyno for vulvadynia. It basically is a very delicate sea salt used to maintain health of delicate marine fish and invertebrates. You buy it at a Pet Store. I did soak in it and it did help ease the tissues and was not drying. I did, as recommended by my doctor, shower or rinse with plain water after the soak. It's was roughly $20USD for 7.5 lbs.

An easier alterative to running a bath is to use a sitz bath. Fill it up with warm-hot water and epsom salts, place it on the toilet seat (after raising the lid), and sit on it for up to twenty minutes (with a good book). Ahhhhhhhh. I find it relaxes my pelvic floor and eases the pain and burning. Sometimes I also apply some ice on the perineum immediately afterwards.

Lernica

man, people told me to do all that stuff like sitz baths. it never worked for me. but now, it's been 7 years... maybe I'll give it another try. never done the ocean one from the pet store. I do take baths whenever I hurt and they help magnificantly. maybe I just never noticed a connection with putting stuff in the bath... only tried it a few times.