Pregnancy Insomnia

Okay so for the past like two weeks I havent been able to go to sleep or stay asleep. I am almost 18 weeks and I have to get up every day at 7:30. WHAT DO I DO. it’s literally 1:46 am and I’m going to the store bc yanno cravings lol... also bc I cannot sit anymore like I feel FULL of energy. I haven’t drank soda or caffeine in hours! :-(