Worried about colon cancer

Hey, I'm a 22 year old and been having a few problems for awhile now. So went to my doctors about a month ago because I've had a change in bowel habits, I can go up to a week without going for a bm and when I do go it literally feels like labour! I've also lost weight, about 8 months ago i was 12stone and now 9st 6 and haven't been trying at all, in fact I eat like a pig so bit confused, I've also got lots of mucus in my stool everytime I go, dizziness, tired all the time, really really bad nausea, abdominal pain, and sometimes get the shakes, anyway the doctor has booked me into see a GI specialist as he's concerned but I have to wait till the 26th of February next year and I'm so worried and feel like i can't wait that long! My symptoms just seem to be getting worse each day, me being stupid went on Google and its literally popping up with bowel cancer all the time so my anxiety is through the roof right now! my main question is what was your symptoms? And how long did you have to wait?

Thanks for reading and will really appreciate the replies.