The unborn baby in mother's womb does not move all the time. Sometimes, it goes into sleep and the mother feels few movements. This is a natural phenomenon with unborn babes. However, your past history regarding pregnancies surely suggests you go for a visit to an Obstetrician. I would suggest you have an antenatal ultrasonogram along with biophysical profile
study of fetus. Did you undergo testing for TORCH titres and karotyping? Do you have any discharge from nipple or watery discharge from vagina? Please visit a Doctor immediately in case of any of these or even otherwise. My best wishes go with you!