Sign of pregnancy?

So I’ve been cramping pretty badly today but only on one side. My dogs been acting crazy clingy. I plan on taking a test. My husband and I are TTC but I got off the depo a month ago. I’m not sure it would happen this quickly but my dog is acting exactly like my last dog with my last pregnancy. My question is did any of you guys have one sided menstrual cramps and find out you were pregnant?