Stressing!!!

You got to admit we all get stressed out. Lately, I've been feeling really stressed out. I'm tired all the time, and I'm very easily aggitated. So much homework, has been driving me crazy. Plus my mom. She puts so much pressure on me I guess it's because I'm the oldest and she expects me to be perfect. Nobody's Perfect, like the Hannah Montana song says "nobody's perfect/I gotta work it/again and again til I get it right." :D haha. But anyways, I have to give up most of my weekend to babysit...get this...without getting paid!!! I'm going to be sitting at home for about 12 hours on both Saturday and Sunday, with a 12 and 5 year old while step-dad is at work and my mom is in Henderson working at a flu clinic. Now it's at the point where I'm not just stressed out, but I'm MAD!!! I have other things to do than watch some bratty kids. I'm not just exaggerating, they really are a pain in the butt! They never listen to me, they constantly bicker and they run around the house etc. I'm just so angry right now. I have a feeling that this weekend is NOT going to be a good one. I need a chill pill.