can't poop!

Kyla
Anybody else totally constipated? I'm taking 3 colace, probiotics increased water intake, eating fruit when I can and still NOTHING! I went 5 days and only went once! I'm so crampy and it's making me feel nauseous. What are you mamas doing? I strained so badly trying to poop I started spotting again. I'm on pelvic rest and I'm so afraid to do much exercise because I'm afraid of bleeding again. I had a partial previa and the placenta is still low. 
Any tips or encouragement is appreciated!