Not able to sleep

Y’all, I have been awake since like 3:30 am after going to sleep at like 1:30 am and it’s now almost 7:30. I got up for a bit and moved around some to try and get my brain to slow down and got on the heating pad because my lower back was hurting. Still tossing and turning with no progress falling asleep. Been having some mild contractions and a bit of nausea as well, but nothing consistent. Also have a headache, but not sure what that’s related to this time (I already have chronic headaches). I had a similar issue yesterday, but I was able to get a lot more sleep and the long wake window was more like 3 hours after about 6 hours of sleep (with small wake windows to pee). I’m so tired, but I literally can’t fall back asleep. Is this a sign I might be in early labor??? I’ve been having a lot of false labor, but wasn’t dilated at my appt on Tuesday. I’m 38 weeks now