Metformin Advice

I’ve on metformin for 1.5 weeks and just upped from 500 to 1,000mg. Everything has been except I am so constipated, which I am realizing is the opposite of the normal effect. I have been eating very healthy in a calorie deficit and exercising and the scale isn’t really moving also, which kinda sucks. I suspect my consitpation has something to do with it, does anyone have tips?