Try apple sauce. It usually helps.. Or yu can take a tablespoon of olive oil with some salt . its natural so it won't hurt the baby it breaks up whatever needs to be broken up.
If your pregnant the only thing you can take is colace no laxatives or try eatting apples I had severe constipatiin in the beggining and id eat and apple and a yogurt and boom id govto the bathroom.. and drink tons of water hioe that helps good luck