Though im older than you i can understand. I keep a check on things by accepting t hat theres nothing I can do other thsn going along for the tests. Can GP help you?.

I have all of the red flag symptoms but tests reveal nothing. Though i had gastrosxope and virtual colonoscopy ct. I couldn't get colonoscopy as my poo qfit was under 10. I,paid £200 for private consultant and he just backed up NHS approach.....He said IBS and anxiety !!! He said thst colonoscopy wasnt reccomended for me. I was shocked. 

Weight loss, iron anaemia, pain, can barely eat, can only poop on laxatives....IBS really??? Who wouldn't be anxious.

Thank you, my GP has been amazing and I'm having the relevant tests but going to the toilet and seeing blood each time is so demoralising and making me worry.

Not helped by google dr either  

I just feel overwhelmed with worry.

I hope you receive the support you need and some answers.