Not a good time for cleanse....bloating and constipation come with pregnancy it is due to your relaxed intestine which is due to pregnancy hormone
I wouldn't. I'd wait til after baby comes.
I'm pretty sure any detox program isnt safe during pregnancy, you don't know exactly what's in them and what it could do to your developing baby, the label will most likely say not to do it if pregnant. If your feeling bloated then maybe try a more natural method like prune juice or prunes or lemon juice with warm water.