Desperate for sleep

Please help me with how I can sleep while pregnant, I have Cholestatis, so all night and day it’s a pattern of trying to relax then I get itchy the itching stops and then I have to get up to pee once I get back to bed it starts all over again, every night I have a bath with relaxing salts, comfy pyjamas and my partner gives me a massage before bed and nothing works, ive tried keeping busy during the day so I’m tired at night and I’ve also tried sleeping during the day so I can get some sleep, I’ve had a total of 2 hours sleep in the last 4 days and I can’t go on any longer, the hospital has offered to give me something to make me tired but because it will make baby drowsy as-well I will need to stay in hospital hooked up to monitors and I just don’t want to risk harming baby if it doesn’t end up working anyway and even if it does I’ll still go home the next day and won’t be able to sleep again