Constipation followed by Dirrahea.

Past 1 week I am suffering from sudden constipation. Before that i had brinjal and and took  supradyn (1 tab/24hrs) for a week. (Now stopped completely). Since then, I am suffering from severe constipation. Initially I had very mild nausea after eating ( now resolved) , bloating upper abdomen( now reduced). But severe constipation is there. Had small stools. If I could describe Type 5 stool on bristol stool chart scale. But past 1/2 days, I am suffering from dirrahea type stool with solid feces. And even thereafter feeling that bowel is not fully evacuated. Once I even spotted a tiny fresh blood spot in stool but it was once only. And consistency and texture of stool looks normal brownish yellow color. Mild bloating is there but gas is passing normally (no foul smell and healthy burping) . Showed up to GP, was prescribed Laxichem and Rantac but still no resolution. Although normal appetite, taking high fibre diet, exercise but still problem persist.