T.W.
I suffer from headhaches, neck pain and TMJ and have had CST many times. I have always found it to be very helpful with the pain and muscle relaxation. It is possible that if you are feeling dizzy it could be from the opening up of some blocked energy pathways. This will pass in time as you become more grounded.
A grounding visualisation can be helpful. Use the image of roots growing out from the sole of each foot deep down into the Earth and then drawing up heavy Earth energy. I like to draw the energy right up through my feet & legs, up through my body until it reaches my heart chakra.
I hope this helps you.
Many Blessings,
Tract Woolrich, RN HHP
WWW.Holistics4me.com
P.S. Upledger is the Gold standard for CST, and has been for years.