Nauseous and vomiting

My first three pregnancy was smooth sailing. I didnt had any nausea and vomiting. But my current pregnancy, even at only 3rd week i've been nauseous and vomiting every single day. Is this normal? My friend even said that to be feeling this at an early stage, she suspects im carrying twins! Is this true? Hahaha, docs appointment is still so far away so i have yet to check 😂 also; any tips to help with the vomiting? Please help 😂