To all my teachers

I am a preschool teacher, ages 3 to 5. This time last year I was pregnant with my 9 month old and loved my Co teacher and had a great relationship with her in and out of school. This year is a different song and dance. I am tolerating my Co teacher but it is HARD. My job is so stressful this year cause we clash with everything. Long story short how do you handle the stress for it to not effect you and the baby? Anyone's advice is welcomed. I know teachers see a lot of stress on the daily by the students and the families.