Could I be pregnant

I just got off birth control the 14 of January and just started my period yesterday my last period started the 5th of January well the day before I started my so came inside me is there a chance I could be pregnant I have two kids and I’ve got pregnant before and during my period (yes I kno it’s gross but I stopped bleeding and then afterwards started again)but I’m just wondering what your opinion is and if u think so when should I test?