first thing is to increase water intake...I only specify water, because some women think soda, juice, etc constitutes fluid.
Next, you can get Miralax over the counter. That's what I typically use in situations like this. Limit the use to 1 week and make sure to drink lots of water along with it...directions are on the bottle.
see if you can look at the chat again...
If you don't see the answer I can type it here again.
I'm not aware of any problems correctol may cause in pregnancy.
I'd try the Miralax first..