You need to get a referral to a sleep specialist and have a sleep study done. GERD is a possibility, but should not give you anything other than the yucky reflux that you described. The other thing to check into is your thyroid. That little devil when dysfunctional hits every bodily function you have. Early dysfunctional thyroid hits.. depression, sleep, anxiety, heart, cholesterol, triglycerides, and blood pressure... the list really goes on and on.
What you are experiencing is not normal and could easily be the result of one or more sleep disorders.. there are eighty and your symptoms list was vague and short.. so I will not speculate. So I recommend you make an appointment with a sleep specialist and try following the sleep hygiene guide in the mean time. I hope you find the source of your issue soon. Sleep is truly golden.. when it is adequate good quality sleep.