sleepless nights

im currently at 28weeks n FTM. im working max 5 days in a row each week. nowadays, i havent been sleeping enough. my work requires alot of walking and running. and all i wanna do once i reach home and settle down is have a good rest for the next working day. however, i cant sleep at all. there are times, i didnt sleep the whole night and only managed to nap at 10am till 12pm. and stayed awake till the next morning arnd 4am. 4am is like the usual earliest timing i can go to sleep. any earlier than that will be full of turning and toilet and uncomfortable feeling. other than that, my constant lower back pain is really bothering me. its like getting worse everyday. i couldnt find any comfortable position despite having pillows, putting medicated oil, massages, and more. it got so bad that i had to sit up for long hrs till the pain reduced. i even had to walk back n forth of the house to see if it works. i even cried many times due to the pain. even my partner dont know how to help me. i even went for prenatal massage, didn't help at all! ? im so stressed at the amount of pain im having even right now im typing and that also causes me to have really bad sleepless nights. sigh FTM and im so sad on how im managing my emotions and pain now ?