You can also buy a small pack of wipes for your purse and instead of tissue paper use the wipe. It will help with the itching and keep you fresh. :-)
I wouldnt use anything your doc probably doesnt want to give u anything because your so close to labor and doesnt want to take a chance of the meds interfering with anything. I personally would just wear cotton underwear and showet when its gets really itchy. Call the nurses line and see if she can recomend any safe ideas to give some relief.
N try cold compress, stay dry change ur panties constantly...
You can use the external itch cream or cortizone cream. I also use a&d