Irritable Uterus?

Kati • Hi I'm Kati. I'm 22 years old with a devilish/sweet toddler named Nathan Earl. Central Coast, CA
I went into my L&D this evening because my son hadn't been very active the past two days and I was having minor "contractions" lasting 10-20 seconds every few minutes. It turns out that I have an irritable uterus (I'm not sure how to explain it). Everything with my son is good. His heartbeat was normal and as soon as they hooked me up, he started going crazy! So I have an irritable uterus to go along with the rest of my irritable self. Does anyone else have this?