Sitz bath is good.  No wearing tight clothes- such as jeans , pants or shorts.  Loose clothing is the best.  Wear cotton undies.

Hope this helps.

Go to the pharmacy and talk to the chemist he will give some advice.

Take a HOTTT bath, (soak the problem) and afterwards apply Preperation H and go to bed.
Repeat the bath 2-3 times a day and apply PH cream at bedtime until it goes away.

For me, it usually only takes one-two days :)