Yes it's normal! Usually just baby's position :) sits on certain nerves and such.
Very normal! Best way to get rid of the pain is
1. Wet a wash cloth and microwave it to the point where you can't touch it
2. Put it in a plastic baggy
3.wrap a towel around the baggy and lay on you're left side as it is on your back.
Heating pads my doctor told me not to use but to do that. Good luck!