Restlessness at night

Elizabeth • Maternity story- two early miscarriages (6 & 7 weeks) but third times a charm...proud mama to sweet baby boy, Mick 💙💙
I'm almost 18 weeks and already uncomfortable at night...I'm not even that big yet! I am constantly tossing and turning trying to get comfortable but I can't find a comfy sleeping position. It's like my muscles want me to get out of bed and stretch but I'm too tired to move. I keep waking my hubby up so I tend to go to our guest bedroom half way through the night. Guess it's good practice for not sleeping once baby gets here! Anyone else experiencing this? Any tips?