Anyone dealt with night terrors? Can you explain how you figured out LO was having them?

The last 4 nights, LO has been waking up and coming into our room multiple times. Previously she was sleeping just fine. I noticed this morning (I let her sleep with us) that she would cry out in her sleep and "hit" but she was asleep? I'm assuming this is bad dream/night terrors? I need help, I need to get her back to sleeping in her own bed through the night.