Insomnia,pressure above my nose and in my head/temples?

I have had a serious insomnia for the last 4-5 days, maybe even more, I've lost track of the nights I can't sleep. I feel extremely tired, heck to the point of exhaustion but I just can't fall asleep, sometimes until 3-4 am, sometimes even until 6 am. I feel a pressure above my nose, temples and it spreads all over my head when I close my eyes. Needless to say my eyes simply open by themselves and just stay wide open regardless of how much I'd try to fall asleep and how tired I am.

It's getting really irritating and I feel this pressure even during the day, it's just way worse at night. I don't know if I have this pressure because of my insomnia, or if I have the insomnia because of this pressure which might I might have because of a sinusitis.

Don't know if this is related somehow but if I want a concrete answer I might as well pour all the details here. I've had a really bad lifestyle for about 2-3 years, not going to bed before 3 am and not waking up before 10-11 am,however I've never had troubles falling asleep if I DID want to sleep. I was more like forcing myself to stay awake. I've had anxiety for 2 years as well and recently started having panic attacks again. I get so panicked and anxious when I can't sleep these nights I even get suicidal thoughts.

I have however taken medicines and still am taking, both sedatives and natural medicine. I've taken melatonin and valerian 2 months ago when my panic attacks weren't that bad but it didn't work so the doctor gave me this sedative called Xanax, it didn't help a lot either, but at least I could sleep. I stopped taking said Xanax two days after this bad insomnia appeared and started taking Diazepam(Valium) 3 days ago. In spite of taking all these medicines I'm still remain sleepless at night.

I really need some help please, I don't want to have another sleepless night. How could I get rid of this insomnia and pressure?