Contractions or something else?

laura
I'm a 2nd time mom and I've been having what feel like contractions, but they're in a small secluded places first like 5-10min. It almost feels like baby is pushing or stretching out really hard, because it hurts and my stomach gets really hard like a Braxton hicks while it's happening. But it's just weird because it will only hurt for a about 30 seconds and only happen a few times and then it won't happen again for a few days..