FTM question

Last night my lower stomach was cramping bad.. Felt like period cramps.. It tightened and felt like this for about 1 min and would go away for about 5 mins and then do it again. It woke me in the middle of the night and kept me awake.. Braxton hicks?? It's not doing it anymore.. Did it for about an hr and stopped. No blood yet or anything just never experienced anything like it before