Pregnancy brain...... The struggle is real!

Omg! I'm so scatter brained and I can't focus. Work is the worst because I'm a med tech. In and disabled adult care home and I am constantly expected to be on top of things but its sometimes hard! Lol. Good thing my boss is aware and is nice. Lol but still.... Its annoying. Do you think that pregnancy brain is caused by the fact that our blood flow to our brain is being limited because we have increased blood flow other places or is it because we can't focus because our little blueberry growing inside us is constantly on our mind? Lol.