Please try not to fear the worst , it's hard I know , my son had exactly those symptoms, it was missed on numerous occasions, he ended up cal lapsing, before they rushed him in to hospital . He had a colonoscopy and they found he had ulcerative colitis, it's at a very bad stage , he is on steroids and strong medication, and have told him eventually he will lose his bowel . He manages his condition, and works full time in construction, but he's still tired and goes to the toilet a lot , he said he's not worried about losing his bowel, as he will adapt. He always thinks positive, I'm so proud.     I sincerely hope your tests come back ok . But if they do come back with something, you have friends on here to help you get through, stay strong, and positive. Thinking of you 

Oh thank you for your reply your son sounds like an amazing young man! I've two disabled daughters both have cystic fibrosis and my youngest who's now 18 suffers terribly with her bowels she's had numiurous operations first one at 3 hours old she had a stoma bag for over a year that wouldn't bother me in the slightest it's the wait and the needing to know I'm so impatient but like I said I've definitely not lost any weight which that seems to be a key symptom did your son lose weight? 
 

once again thank you so much for replying xxx

Oh thank you for your reply your son sounds like an amazing young man! I've two disabled daughters both have cystic fibrosis and my youngest who's now 18 suffers terribly with her bowels she's had numiurous operations first one at 3 hours old she had a stoma bag for over a year that wouldn't bother me in the slightest it's the wait and the needing to know I'm so impatient but like I said I've definitely not lost any weight which that seems to be a key symptom did your son lose weight? 
 

once again thank you so much for replying xxx