Suggest Remedy For Persistent Vaginal Discharge

I have 2 children. Ever since giving birth 3 years ago I have had a discharge enough to now have to wear panty liners every day. I never had any discharge on-going like this before having children. I have not heard of any other people suffering from this. It is not itchy or smelly although I do tend to get thrush from time to time (maybe from wearing the liners every day?)....I have been to docs but just keep getting told some women are prone to discharge and maybe I should just put up with it. If there is an operation or procedure I could pay for to right this I would I just don't know if I'm being given the brush off as the nhs won't fund it? After posting my problem on a few mum sites i'm told it's not normal and no-one else seems to have this, hence my reluctance to believe there is nothing that can be done? advice needed please