What can I do to ease the vaginal and back pain while pregnant?

Exercise, stretch. This is an uncomfortable time in pregnancy. Stretching exercises and warm packs can help with the back pain. . The vaginal pressure is due to the baby being low and is, unfortunately, part of the process. Moving and walking usually feel better than laying still. Osteopathic manipulation or some chiropractic techniques are also safe and helpful in pregnany. A warm bath can help.
Conservative . Try heating pads for the back pain. In europe, it is common to use tens machines for back pain in pregnancy.