Poop talk

So a little TMI but I need to talk bowls. I suffer from IBS. Well at least I did before I got to 20 weeks. 4-5 times a day and now maybe once every couple of days. I constantly feel full, I feel.like if I were to be able to go at least daily I'd feel alot better, less stomach cramps and bloating. I forgot to talk to my doc about it today. Anyone else with this issue and trying Miralax? I want to but I'm afraid of getting the shits and being afraid to leave the house!