Brief Answer:
yes it could be, but please undergo investigations, meet gastroenterologist

Detailed Answer:
Dear XXXXX, welcome to HCM and thanks for choosing us.

I have gone through your question in detail and I share your concerns. Let me first tell you that probability of crohn's disease can not be ruled out but just one episode of these symptoms do not suffice to say that it is crohn's disease.

I appreciate your efforts in putting several details in your question but I would like to following things
Duration of your current problems
Age at which your brother got crohn's symptoms
Any investigations done
Treatment taken and response to the treatment

If you have these symptoms for years together with partial relief by medications it could be crohn's. Else it could be a gastroenteritis, or irritable bowel disease , related to stress, thyroid (hyperthyroidism) disorders, some cancer as you have strong family history of cancer. Please visit a doctor for clinical examination and laboratory tests to come to a diagnosis. You should meet a gastroenterologist. You will require a comprehensive health assessment.

I hope my reply will help you in deciding about next course of action. Please feel free to write for follow up queries. I wish you good health. Kindly provide a feedback on this reply.

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