I am 38 and have the same thing every day. Every time I watch movies and see guys sniffing girls panties, I always think ewww I'd hate for somebody to see mine with the discharge.
I believe it's just a part of our female life. As long as you're not having any symptoms such as itching or odor, I wouldn't worry too much about it. Definitely stop wearing the tampons and try pantiliners. Those things are so tiny anymore you won't even notice them.