Thanks for the query.
According to your description you possibly had Bartholin abscess
And that might have ruptured due to hotel sitz bath.
As you are still having pain due to infection, you have to consult gynecologist and get examined.
With her advice you can take local and systematic antibiotics. Analgesic
and anti-inflammatory drugs will help in decreasing pain and swelling.
You can continue sitz bath with luke warm water that will help in decreasing pain.
For more details you can ask me through the premium forum.