Blood in motion. In the last two days.

Hi I have been observing blood in my stool for few weeks now. Its not been regularly happening but the last two days I feel the quantity of fresh blood I see has been quite larger than usual. I goto toilet after I eat something in just an hour and I can feel some uneasiness in the lower abdomen, around the stomach area as well while going toilet and also after. My eating cycle has changed, I have lost 4kgs in 45 days or so without any exercise,I slept for 12 to 14 hours continuously for three days with a feeling of constant dizziness last week even after I woke up . I have lot of mental stress due to work issues and I am not able to sleep properly as well even after working for 14 hours a day in the last two days. Thank you.