Weight gain after stopping birth control?

I was on BC for 10-12 years, I went on it when I was younger due to the doctor giving it to me when I was 18 so I didn't fall pregnant. I never had any side effects whilst being on the pill but decided 4 months ago to get off it as I want to prepare my body to be ready to have a baby in a year or so and I had friends close to me not get their period back for a year so my gut told me to stop taking it, in case my period took a while to get back. A few of my girlfriends who stopped it got severe acne so that was my biggest worry, however I never had acne as a teen so assumed i'd be okay.

After about a month of being off it, the symptoms began. Skin was completely fine, if not better, but acne is now the least of my worries. Crazy bloating which I had never experienced my whole life, cramps when ovulating, oily skin & hair, extra hair growth on upper lip, and weight gain. I put on 5 kilos in a month without changing my diet at all. 3 months later and my period came back, however the weight gain and symptoms only seem to have gotten worse. I am not coping with the weight gain, I have always been a slim girl and have been able to eat whatever I want in moderation. I exercise daily and eat clean and the scales just kept going up. The doctor tested me for PCOS & Thyroid and everything looked okay. I even went to a naturopath and spent a lot of money but the weight just kept piling on. I have lost all hope and am considering going back on the pill which seems so backwards but this weight gain has ruined my life. None of my clothes fit me anymore and I am too insecure to go out with friends. I am so devastated by this and am wondering if anyone has gone through the same thing, and if the hormones evened out in the end and your body returned to normal? The weight is mainly my legs, thighs, and bum, however my arms, stomach and back have all doubled in size.

So upset and wishing I never went on the pill in the first place. I fear this is going to be my life forever and it is so depressing.