Is it normal for my body to twitch/have muscle spasms?

only if your a spastic

Sometimes when I'm laying down, my feet will jerk. You probably need to talk to your medical provider though just in case.

In general, I don't think that it is normal. Periodically, sometimes closely spaced together, I have experienced spasms. I remember there was a time where I kept having eyelid spams multiple times in one session. Those were very unpleasant. I never found out exactly what was causing this. To be on the safe side, I think that consulting your doctor would be a good idea.