I have been doing some reading about rashes in pregnancy (I have dreadful eczema on my hands - driving me crazy!) and one thing I read about PUPPP is that it sticks around until 1-2 weeks after giving birth. Is that cream a corticosteroid? They help to control the rash's spread and the itching, then a milder cream can be used to keep it at bay and more comfy. Then it should just fade after bubs arrives.
Strange, because most people get it in their first pregnancies and not subsequent ones! I feel for you, mate. I didn't have any rashes with my first pg, but am copping it big time this time round!
At least you don't have too much longer to go