I'm not sure that going back on the pill would reduce the thick pasty discharge. The pill prevents you from ovulating therefore you'd be more likely to see a reduction in the fertile clear stretchy mucus you get around ovuation time (if you have any).
You could definitely ask your doctor though and see if he thinks it might dry things up a little. Sorry I couldn't be of more help.
You know, nature has a way of doing things naturally. The vagina has its own antibacterial cleanser. Your mucous changes over the month, if it is not smelly, green or coloured and your not scratching. It is normal. Some stages it may be heavier or lighter, wear a panty liner if uncomfortable, but they too can change the environment there. Think of it as the natural you!