Just curious

So am just curious I haven't had a period yet it should show up on the 8th but Christmas eve I ovulated same as Christmas Day and the day after well my husband and I had sex all three days well New Year's eve I had light cramps only lasted maybe 5 min and my boobs were sore but only lasted a few hours. Could the cramps be inplantion? I googled it and it says it's a possibility that pregnancy is involed what do u lady's think I already have one baby she's gonna be 4 in March and I didn't have any of this with her so that's why am asking.