The tip of my tongue has been numb for a week spontaneous headaches like brain freezes, when i talk it feels like pressure building in my head?

See MD asap!: You should see your physician as soon as possible for an evaluation. You have multiple symptoms that may be indicative of serious medical issues that justify a proper diagnosis and treatment. Don't wait any longer.

Tongue numbness is: Generally a rare complaint and may indicate a number of issues. I recommend consultation w a dental specialist such as an oral surgeon for an exam.