At the outset, congratulations on the delivery. Do hope the baby is healthy & doing well.
If your husband & you having intercourse relieves it for days, then you have your answer right there. For the moment dont speculate too much on it..enjoy your husband's company!
compresses are not a bad option & you may try an antihistamine at night.
It may be prudent to do a Herpes IgG
& IgM test to begin with.
Also, please do tell us what cream you are using so we can have an idea of why it may or may not work.
If you wish discretion, pleae use our special ask-a-doctor feature & get in touch with me directly to take this forward.
Good Luck & Godspeed!
Dr Praveen Rodrigues MD