Could I be pregnant ?

Hi everyone!

So I had sex October 5th at the end of my period, I had my period in November and It was a full blown period not just spotting, I haven’t had sex since then but my period is 16 days late, I moved shifts last month and basically flipped my entire schedule around so I’ve been blaming it on that, also have been sort of stressed about Christmas. I’ve been putting off taking a test because I have a 7 month old and am TERRIFIED of having another one right now. So what do y’all think? Like could I be pregnant?