Eh, totally normal lah! Cramping in early pregnancy boleh datang pergi je, so don't worry, a few of my mum friends had the same experience and everything turned out fine. The ligaments are stretching, hormones are all over the place, so sometimes you get cramps, sometimes tidak, it changes day by day. That said, since this is your first time pregnant, best check with your doctor just to put your mind at ease, terutama if you notice heavy bleeding or anything else yang suspicious. Congratulations on your pregnancy!