Can someone please help me work through my thoughts about the Chiropractic vs. Medicine thing?

Ok so. I’m the 13-year-old girl with parents that don’t do MDs that has asthma that you’ve been reading about on here.
Well. On Saturday, my mom went to this seminar thing at our chiropractor about how terrible vaccines are. I was like, “Oh boy, more propaganda.” But everything made sense! And it really sounded like the real deal. He’s got ALL the documentation and everything. Google “Dr. Pete Wurdemann” and you’ll get all his stuff. Then there’s the MD’s. Their stuff makes sense, too! I just really don’t know what to believe and I’m kind of uptight about it. You would be, too, if you lived in my house. My mom is great, really great. You might think she’s some kind of ogre, but she’s the greatest. Except for her crazy ideas. And she’s of the opinion that she should make up my opinions and stuff, so if I ever even suggest that I don’t believe what she believes, I’m in for it. Not really seriously in for it, but I would get some stuff like cleaning the kitchen by myself and raking the whole yard (we’ve got a big yard).
Sorry about the long schpiel, but I seriously needed to get it out.
So my question:
What’s your opinion? And what should I do?