Period cramps at 24 weeks???

Yesterday I started getting period cramps starting in my back coming forward and they're back today. They're not painful, just uncomfortable but I always tolerated my period well. They come and go every so often throughout the day. Is this normal at 24 weeks? Little ones moving like crazy thank God but it feels strange to feel period cramps after 6 months without one lol makes a FTM worry. Could it be a form of round ligament pain? I've had it tons of times but not like this. I literally could swear I have my period from the dull low back cramps that wrap around and make my legs ache. Please helpppppp