Although mild crampings are normal in pregnancy
but severe cramps accompanied by bleeding is definitely worrisome and needs evaluation by doctor to rule out miscarriages.
However you should not loose hopes as about 30 percent of women experience some form of bleeding in the first trimester, and about half of them go on to have normal pregnancies, while the other half suffer miscarriages.
The majority of miscarriages occur during the first 12 weeks of pregnancy, and the signs include bright-red bleeding and pain similar to menstrual cramps
Before you assume you’re having a miscarriage, visit your doctor so he or she can check for the fetal heartbeat.