Crampssssssss

Alright ladies. This is my second pregnancy. I’ve been up since 3:30 this morning with bad cramping to where it takes my breath away. I’m 13-1 and I thought it was poop cramps but it happening about every 10-15 minutes and lasting about 30 seconds to 1 minute. I’m calling my doctor when they open. I’m not bleeding but I am a little concerned why it’s hurting so bad. I know cramps are normal but I don’t think they should be hurting to where it takes my breath away. I tried to walk it out but I just got dizzy and had to sit down. Anyone have an idea of why this is happening? If you think miscarriage please say it in a very gentle way. I’m extremely emotional. Which I don’t think it is but I’ve never had one and I don’t know the signs.