sleepless nights 😩

I'm 30 weeks pregnant and I am ALWAYS tired expect for when it's time for me to go to sleep ....I work early shifts at my job getting up for 4:30-5:30 every morning and I always feel so exhausted! Sometimes I'll catch myself falling asleep at work like I literally look forward to getting off work so I can go home and take a nap ..so I nap for a hour or two after work but when night time comes around I'm still tired however as soon as I get in bed my mind just starts wondering and I have to pee a thousand times and I can't get comfortable and my throat dries out constantly leaving me dry coughing all night waking me up .. so here I am at 12:50 almost 1 am still can't sleep have to get up for work at 4:30am today and I'm just so depressed I want to cry! I need my sleep I feel so bad bc I'm calling off of work but if I go to work I'll be falling asleep at work and very grouchy and lazy with customers .. can someone please give me advice on what I can do to help me sleep or does anyone else even relate to this am I the only one with these sleep issues ?! 😪😪😴