If there is something that is making you think you may be dilated tell your doctor you would like to be checked. I had an appointment last Friday and I have been having a little bit of pressure and told my doctor and he told me just to let them know if I would like to be checked and it would be no problem.
A water molecule is polar because there is an uneven distribution of electrons between the oxygen and hydrogen atoms. Why are water molecules polar? With 8 protons in its nucleus, and oxygen atom has a much stronger attraction for electrons than does the hydrogen atom with a single proton in its nucleus. Then there is a greater probability of finding the shared electrons near the oxygen atom than near the hydrogen atom.
A hydrophobic molecule is a molecule that won't combine with water. The word hydrophobic describes this water-repelling characteristic; hydro means water in Greek, and phobic derives from phobos, which means fearing.. Though these molecules don't literally fear water, they do not mix with water molecules.