Irregular bowel movement

I am 23 weeks pregnant and, It is been a week where there is a huge change in my bowel habits. Every time i eat i feel the urge to run to the bathroom and I will have a regular form stool with yellow mucus attached to it, also big amount of stool. This happens to me 3 to 4 times a day. Sometimes i dont even eat that much that day and i will still have a huge amount of bowel movement. Also, my butt hurts... Anyone experience this problem?