Real contractions can range in feeling for each person/pregnancy.
Menstrual cramping, hip pain, low back pain.
Real ones will also tighten up your uterus where when u touch your belly it's hard everywhere and movement doesn't help. And it lasts anywhere from 30-90 seconds. Of that's your case then you should time them from the start of one to the start of another. As long as they are more than 5 min apart then u don't have to go into the hospital yet.