I had a similar thing with Microgynon! Only it ended up up with swelling to the tune of 12kg! Then I was on Marvellon for some time (for PMS exaggerated by PCOS) but it stopped working 
. So now got NuvaRing but worried about the bloat going into the weight gain. With Marvellon I never had any of that when I started the pill. I know it's early days but I'm worried I'll end up like before.