I HAVE LUNG CANCER SMALL CELL AND I TAKE KEMO

I HAVE LUNG CANCER SMALL CELL AND I TAKE KEMO I GET SICK WITH NEULASA THAT COMES AFTER TREATMENT MY DOCTOR PRESCRIBED PROCHLORPERAZINE FOR ME THE BOTTLE SAYS IT IS FOR PAIN I DONT UNDERSTAND I THOUGHT IT WAS FOR NAUSEA WHICH I HAVE A LOT THEY TOLD ME TO TAKE IT EVER FOUR TO SIX HOURS BUT I DID NOT UNDERSTAND THE PHARMACY MARKING IT FOR PAIN ON BOTTLE IS THAT ALSO FOR THAT WHAT ALL IS THIS DRUG USED TO HELP THANK YOU SO MUCH PLEASE TRY AND EDUCATE ME ON THIS CAN YOU TAKE THIS ON A REGULAR BASIS I AM ALSO EXPERIENCING PANIC ATTACKS