Extreme stress during pregnancy...

Honestly, the last couple days have sucked. Two days ago, my momma had a stroke. Her symptoms disappeared after about 15 minutes, so they thought it was a TIA, instead of a stroke that caused damage. Then yesterday, on my birthday and the first day of school here, it got significantly worse. My oldest had just gotten on the bus for high school, and my younger boys were getting on the bus to attend public school for the first time. (I had previously homeschooled for two years.) As we were waiting for the second bus, I called my mom, and I knew. I could hear it in her voice. To say I've been stressed is an understatement. I was the only sibling in the state, and my mom's only my family besides my sister' I've never been under this amount of stress, especially in pregnancy. What kind of effects is this having?