Thank all for all the info. I went to my Obgym and did a ultra sound .
Hm, this is interesting. Most women get cysts from time to time, simple cysts, and weight gain is not something I hear of them experiencing. I had a cyst myself. Polycystic Ovaries do often have a symptom of the disorder to be weight gain among other things and irregular period as well.
I think you are speaking of hormonal weight gain and bloating? Most simple cysts pass on their own. They are like a really bad period with cramps and heavier bleeding. They can definitely be painful and you may experience irregular bleeding. And leading up to the cyst passing, you can have more cramping than usual during your cycle.
Do you see a regular gynecologist? This would be who I visit next. Emergency is good but they only treat acute situations. A regular doctor can give you more information on this cyst and what to expect. If you don't have a regular gynecologist, visit your gp at the least or find a good clinic (in the US, you can go to planned parenthood as a good resource for women without a regular doctor).
Once my cyst passed, I went back to normal routine periods. So, give us more info on the cyst. Did they see it on ultrasound or are they guessing what it is based on symptoms?
Are you experiencing chronic cysts or have you just had the one? It is pretty normal for you to lose the weight after the cyst is removed.