Feeling worse

First I would really like to thank sleeptrainingsystem for the advice this post is not really insomnia related but more of a venting and well even though I am 100 percent positive that I do not have some rare genetic disorder I am so frustratrd that even thoigh my dleep has improved my brain feels like literal s*** it feels like I sleep sometimrs 6 hours a night which is a major improvement plus my time taken to fall asleep is now shortened however I do get up sometimes 2hours in the night to void my bladder but c my problem is I do not feel refreshed on mornings and my head really feels like it is in a vicegrip most of the time with infrequent sharp pains occurring.As you can imagine this is rdally frustratinh at the worst of this pain I can not perform maths and cognitive reasoning is a hard feat to perform it is really frustrating as I am now studying and getting pre requirement to enter college just so you know I am doing A levels and got distinctions in maths,chem,phys and app maths but during most of the day now when my brain is at its worst I lack the ability to do simple multiplication such as 5463*452 even soduku frustrates me,what Iam getting at is I am frustrated and want to return to normal before my insomnia set in just so you know I am on holidays but I only have three weeks before school starts.I am going to see my physician but again thanks sleeptrainingsystem for your advice I really appreciate it and I would like to know if you think sleep deprivation is my problem