I'm exactly 18 weeks pregnant and for about a week now have been having period type cramping on and off. I have spoken to the Midwife who has said it is normal and have tested negative for a UTI but I'm just so so scared. I haven't had any cramping at all throught the pregnancy until this past week. It also doesn't sound like ligament pain from what I have been reading. Can anyone offer any advice or reassurance?