There is diarrhea like condition for more than 2 weeks. Also a huge amount of weight loss. Some loss of appetite and some discomfort. Some cramping pain now and then.
No yellow eyes
And No large boring pain

Can you tell me what it could be?

It sounds like it could be time to see a doctor.

We can't diagnose problems on here but if this has been going on for 2 weeks, you need to get looked at.

Have you been on any antibiotics in the last 6 months?