IAm worried

Mariah • Baby #4 . Due July 24,2015 💙.
My cramps are getting me scared I had a miscarriage in July of this year but my doctor said its normal as long as I don't bleed .  And due to the fact I have a vaginal ultrasound Imma have come cramps . It's just scares the hell outta me . But my baby was fine in the ultrasound .