thanks for all your replies girls they mean a lot to me. I talked to my mom but she doesn't want to be "rude" with my sister...

The baby's daddy came even though I was sick and we had a nice time watching cartoons as I was laying on the couch trying not to puke.
My mom told my sister I was sick too and she came to me asking all happy "are you sick? hahaha you have diarrea?" laughing! I was so angry she noticed it and told me "oh well your sister goes to school so she could have passed it to you" I told her her kids are throwing up all over the place and pooping like crazy and she tells me that MY HEALTY TWIN SIS passed it to me?!
God... she's crazy!