What is the best way to track the growth of my baby bump?

Reg doctor visits. Monitoring the growth of the baby is one of the things your doctor will monitor during your regularly scheduled office visits. The doctor will use a tape measure to feel the top of your uterus (fundal height). This will be done each visit. If there is ever concern the doctor can do a sonogram to confirm that the baby is growing normally.
Prenatal ultrasound. The best way to asses fetal growth is customized fetal growth curves per prof. Jason gardosi's data: www.Gestation.Net.