Getting worried.

I (F, 32) have been having weird symptoms for the past two weeks. It first started after going through stressful situation at work. Day one I had bright red blood surrounding my stool in the toilet (blood was not in my stool), I panicked and started to have cramping in my stomach. Day two I had blood surrounding my stool again but much less. Since then I have had no blood but irregular stools along with the cramping on and off. I have also been experiencing bloating, and uncomfortable trapped gas. I of course made the mistake of googling my symptoms and found out the big C could be what's causing it. I had a colonoscopy scheduled but decided to cancel it as they were going to charge me nearly 4k (with insurance) which I cannot afford right now. I have found another company called ColonoscopyAssist.com which provides a much cheaper option. I am waiting to hear back from them. But the waiting is causing me anxiety in itself. Has anyone had the same symptoms as me? What advice do you have in terms of the colonoscopy prep etc.? Any tips on helping my anxiety?