Contractions

Cinthia • Lost my sweet baby at 36 weeks. I love you Naomi. Forever and ever, you`ll always be my first perfect baby girl. :(
This is my first baby and I don't know what contractions feel like, and what is something to get checked out. Anyway, I've been feeling like my baby is balled up all day. It hurts, and when I went on my lunch break I was sitting in my car and I got a sudden pain on both sides, when I touched my right side and pressed a little it hurt more. The pain passed and hasn't came back. Is that a Braxton hick contraction? What do those feel like?