Spotting?

Hello! Im currently pregnant with my second baby. Ive been having light brown spotting the past few days. Anyone else going through this? The doctor said its normal but I didn’t have this at all with my first pregnancy. I also have a lot of nausea with this one and did not have that either with my first. I know I should listen to the doctor but I’m having a weird feeling something is wrong. I have light cramping, nothing too extreme. Thanks for any advice in advance!