Pregnacy advice needed

I am 28 weeks pregnant 1st pregnancy. Imma just be blunt... Ive been constipated for 4 days and i dont know what to do. My stomach gets upset and feels like i have to go #2 but when i go to the bathroom nothing. Im going to see my doctor on monday but wondering if anyone knows of so homeish remedies or just remedies at all to help before hand.