Hair loss??

Arianna • With the love of my life and mother to our handsome little boy ❤️
Everytime I brush my hair or shower, a lot of hair falls out. I mean A LOT. If I brush it the whole floor is full of hair.. I'm almost 13 weeks. Is this normal or is something wrong? I have an appointment soon but my doc is too busy and I can't wait 3 hours to talk to her on the phone. Help? :/