3dpo :)

so my and hubby babydanced 4 days in a row before ovulating the next day, I am now 3dpo and been getting symptoms like cramp, tiredness and bubble feeling at the bottom of my stomach, do u think I could be pregnant? I went on the drop injection exactly a year ago, then went on the pill and come off if December 6th, had been having unprotective sex since and had no signs of baby has anyone else experiences this?