I am the same weight as yourself and I am 157cms tall
I have 2 children, and I guess was slimmer when I fell pregnant. I have a weightloss group and in it I have a lady who also has PCOS. She and her husband have been trying to have a baby for many years.
I do a gallbladder cleanse twice a year. It's quite gross... lots of empsom salts and olive oil, but WOW.. when you see what comes out of you it's quite remarkable. People think that gallstones only come out on Xrays but that's not it at all, they have to calcify to do that, and many of them don't.
This cleanse I do, is 100% safe, and is done using every day household foods. If you are interested, please let me know, however it may be a case of shutting the gate after the horse has bolted. Oh well, PM me if you want the recipe, I would be happy to forward it to you.