Being a first time 'soon to be' mom, I'm not familiar with what aches and pains are normal and which…

Being a first time 'soon to be' mom, I'm not familiar with what aches and pains are normal and which arent during the first few weeks of pregnancy.. I only found out today that I'm preg and for the last few days I've been feeling a bit bloated and kind of crampy. Is that normal? Should I be worried ?