If you are having sex, then yes, you need to see an ob-gyn. All girls have to start seeing an ob-gyn when they become sexually active, even if they don't have any problems at all.
You can keep experimenting and trying different things. See what turns you on. You can also masturbate to see what kind of stimulation you like and where you like it. If you find that you don't get very lubricated no matter what, you can buy a lubricant at the store.