Is this symptoms of a brain tumor? its hard to sleep. it felt better if i put pressure on my left side of the face when i sleep to relieve the pain. my left side of the brain is aching. it started behind the eyes. then it starts to develop little tingling

Symptoms : Symptoms of a brain tumor can vary greatly, and depend on what area of the brain is affected by the tumor. Your symptoms do not exactly scream brain tumor, but more of a possible bell's palsy, temporal arteritis, or a cluster or tension headache. Regardless this is an issue that needs to be evaluated by your primary care provider right away. A detailed history of your problem and directed exam including a neurological one will be useful in determining the cause of your symptoms in order to get appropriate treatment started. Good luck.

Not likely: These symptoms are not likely a brain tumor. But it would be worth seeing your doctor or a neurologist.