Plz suggest what is the normal pulse rate for pregnant woman.i am 3.5 months pregnant,my pulse rate is 100bpm.is it normal?

Depends: Obviously women who are overweight may have a higher pulse. In general though a mild increase in the pulse does happen in the 2nd trimester as your blood pressure tends to drop around 14 weeks. However, if your increase pulse is causing your chest pain or shortness of breath, you need to alert your OB to rule out other issues. Your pulse also varies throughout the day.