Over last 2 weeks i have had increasing vaginal discharge. it is thick, white and sort of chunky (sorry tmi) there is no smell, itching or burning....

Not sure: However, pregnancy can give such discharge but you say you are not pregnant. Secondly hormonal changes, diet, new medications can all cause such changes. In yeast infections, one can have such a discharge even without the itching. If this continues to worry you, see your doctor for a thorough evaluation including a Pap smear if not already done.