The stool appears to be type 2 with a very dark brown color. Increasing water intake and consuming fiber-rich foods can help prevent constipation. Given your IBS and lactose intolerance, pay extra attention to your diet.

The stool appears somewhat firm, corresponding to Bristol Stool Scale type 2. The color is a very dark brown. Consider increasing your fiber intake and staying hydrated.

The stool appears as hard lumps and is very dark brown in color. Try to improve constipation by increasing your water intake and eating a diet rich in fiber. If symptoms persist, it is recommended to consult a doctor.