My town does not have the best streets, hilly and the roads are in desperate need of repair. I didn't do too bad, a few messy stops, confused the clutch and the break a bit, and only almost ran off the road twice, but managed to recover.

My brother and my boyfriend both say I have good form when riding and that my turns are good. I was happy tonight that I didn't once stall the bike while going forward from a stop. But I still feel really jittery and feel like there is so much going on that I'm going to forget do something like break in a turn, or grab to much front break and fly myself over the handle bars.
My question is....is this feeling normal, and how long should it last before I decide that maybe its not for me? Anyone else have doubts this early on? Granted I've yet to dump the bike, I guess I just thought it would feel more, natural?
I realize I have less than probably 20 miles on the bike so far. Advice? Encouragement?