I'm 26 years old. I've been worried for quite a few months now that I have bowel cancer. For a year now I've had severe constipation and only go to the toilet once a week usually. I had red streaked blood on my stool in the past. Perhaps I still do. I refuse to look down the toilet now. I've had a stool sample last summer and blood tests about a month ago which were normal. I still think I'm anemic from the bleeding tumour. I'm constantly looking in the mirror to see if my skin's pale. I often (but not always) have a rapid heartbeat as soon as I stand up and walk around. This symptom was present before the blood tests. Now, though, I have an unsteady off-balance feeling a lot of the time, nausea, and sometimes when I lay down and close my eyes it feels like my bed is rocking. Like a boat. I looked up vertigo and apparently it is not an anxiety symptom. Doesn't seem to be a bowel cancer symptom either so I'm not sure where that's come from. I'm really worried. I feel like I'm going to snap and just go completely insane any time now. This is on my mind 24/7. It even invades my dreams. I genuinely feel like I'm dying and nobody is taking me seriously.