endometriosis
"The first 2 months I took this pill I wanted OFF and a new OB. I had horrible side effects from nausea to paranoid anxiety. 
I've now been on it for 6 months and love it. I have no side effects, no periods (continuous use) and I have endometriosis and NO cramping! It's a literal miracle.
I have had a 10lb weight gain, but I have also recently been diagnosed with fibromyalgia and have stopped working out where as before I attended Zumba weekly to bi-weekly. I don't know what to attribute it to for sure but I would say maintaining your weigh would not be difficult even if it was the pill.
If you're googling because you were just put on it and are freaking out, I suggest pushing through. This has worked miracles for me!"