Sharp stabbing pain in left breast

I am 16 weeks pregnant and woke up this morning to a sharp stabbing pain in my left breast. It has been happening on and off all day. It only lasts a few second but it is super painful! I don’t remember having this with my son. Has anyone else experienced this?

My doctor’s office is closed today, but I plan to call in the morning if it continues. In the meantime, wondering if anyone else has had this?