Well hello there! Welcome to DA
I dont normally browse the "newest" section of the site since there's a lot of garbage up there.. but here I've stumbled on a treasure! There is alot of promise in your watercolors my dear and I do hope you will continue to pursue your newfound creativity.
Don't worry about trying to find a single medium to work with, I myself use 4 or 5, its just more fun that way. If you try and limit yourself in your tools of expression, you might as well throw yourself in a jail cell. Do whatever feels right on the moment an idea hits. I think you will find a lot of success down the road