TMI post about constipation 🙈

May • 27 y/o full time student & mom of 7 year old with downs and a 4 month old girl. Married to a dreamboat and creating my first online sales website.
I have been having issues for weeks, at first I was completely regular to my bathroom visits and it was great. The last few weeks I have days in between with this past 2 weeks being the worst. I got the go ahead from my OB to get Miralax and just take the recommended amount once. It worked but it has been 5 days since and nothing. They told me to try again AND NOTHING.
Are there any recommendations anyone can give?? I have tried coffee, salad, again TMI but I am miserable!