What Does This Mean?

I'm 17 years old and I have colds a lot, and I just had one recently that took a week to get over. Cold's pretty much all gone, I keep having dizziness and extreme exhaustion. My mother says its my ears all plugged up. But its not just the room spinning, every morning I wake up and everything I look at looks shimmery and shakey like when you see heat waves. I'm exhausted all the time especially in the mornings I can't function at all. Not only that but my body temperature keeps changing way too easily, if I have a jacket or blanket on I get waaaaaay over heated and I start sweating; if I take off the jacket or blanket I get chills. my blood pressure
is a tiny bit high but nothing serious, and in the past my blood pressure has been good. So... What do these symptoms mean? I'm going to different forums to get different answers