Exercise and cramps

Katie • Momma of five babies ❤️
Hello everyone. Just a quick question. Iam currently a little over 13 weeks and decided today I finally had enough energy to go for a semi moderate walk.
​Nothig crazy, probably 30min. After I got home i noticed on and off light cramping. Has anyone experianced this with exerise? I dont remember ever cramping when i worked out pregnant with my son, however i was in great shape then and never stopped my routine. This time around I have been a couch potato.