What does gravida 3 para 0030 mean?

Gravida means pregnant. The numbers following "gravida" indicate the number of pregnacies, so "Gravida 3" means Third Pregnancy. Para means having given birth to one or more viable infants, and the number following "para" indicates the number of times the woman has given birth. For example, Gravida 5 Para 2 would indicate 5 pregnancies but only 2 infants, meaning 3 miscarriages.

Most likely what you're wanting to know is what Gravida 3 Para 3 means- it means 3rd pregnancy resulting in a 3rd infant.