Welcome, Tristeve. I too had difficulty swallowing thin liquids. My speech therapist suggested a product called "Thickit" available in most drugstores. Give water the consistency of nectar and doesn't taste terrible. May help as you really need to keep swallowing stuff or the muscles forget how.

David R. 65 yr old male non-smoker, light drinker, stage 3 or 4, depending on which doc you ask, scc rt. tonsil, 2 nodes, 7 weeks radiation and chemo. No surgery. Teatment ended 3/20/08. PET scan 8/08 showed no cancer.
And now, as of oct, 2010, caregiver to wife, Linda, with breast cancer.
May, 2013, Linda diagnosed with stage 3 ovarian cancer. Enuf already.