Scared I might have bowel cancer

Hello everyone, it's going to long and I would appreciate even one person just reading this. 
 

last Tuesday I started to get an upset tummy. Went a couple of times in the morning then went off on my day and then a couple more times in the evening(diarrhoea). Wednesday, I went about my day, but from morning to evening, without exaggerating, I went to the toilet atleast 20 times all very watery stools, with around 3 in the evening having what I think was pink blood in and mucus. I also had a slight temperature in the evening which I took paracetamol for. Thursday I was exhausted, I woke up and still had watery stool, and pink blood in the toilet and upon wiping. I called the doctor, and she said I have a tummy bug and I need antibiotics because I have blood and mucus in diarrhoea. I slept most the day and when I woke up I managed to finally eat some dry toast and a dry cracker. Also I need to add I had no sickness but bouts of nausea which only last around 24 hours. I still had a slight temperature which paracetamol was managing. I had only been to the toilet 3 times that morning so felt I was on the up. In the evening I ate plain pasta and within 10 minutes needed the toilet, again! I went straight to sleep after that I had had enough. Through the night I had stomach cramps but they eased when I passed wind. Friday was a different day, my stool seemed to be still loose but formed if that makes sense. I had no temperature and managed to get some things done. I ate some plain rice and some bread and thankfullY stayed in my hungry belly. (I'm starving)! I picked up my antibiotics and they are HUGE! I have a fear of taking tablets so small ones would have been better. Again I went all day without needing the toilet and by the evening I admit I ate a small chicken burger and ended up back on the toilet( my mistake!) I forced myself to go back to work today as I have been off for 2 days. I felt better in myself, albeit I still have stomach cramps, I went to the toilet twice before I went and still loose but slightly formed. I spent 5 hours at work,( I work in a cafe) had about 5 chips and instantly started getting stomach cramps, within about half an hour I was back on the toilet. More than once, loose watery stool. For dinner I tried to have some chicken broth soup and some dry toast, and again back on the toilet. And now I'm sure I can see blood again. I put on my big girl pants and cut the antibiotics in half and took half but choked. I'm absolutely terrified at the age of 31 I have bowel cancer. Day 5 and I don't see an end in sight. I'm supposed to be working a 9 hour shift tomorrow and unsure wether it's safe to do so. My anxiety is through the roof. I want to feel better. All I can think is that Iv got the dreaded disease and I'm going to leave my 3 babies behind. If u have been brave enough to read all of this I thank you and someone please help me :(