Off the pill to lose weight

Decided to get off the pill so I can lose weight. I have put on 3kg with the pill and I can't lose it no matter how much I try with diet and exercise. So, I decided enough was enough. I told my husband he will just have to be careful. The pill has been giving me non-stop problems. The past 3 months on it I have hardly had a proper period. 2 months ago I had them for 2 days very lightly, then last month it was 1.5 days very lightly and this month 2 spots and then that was it. So, I just don't trust it, and what it is doing to me. I am always crampy (no not pregnant) and just feel so bloated 24/7. So, going to speak to the doctor about it to see if I should get a scan done or blood tests.... I feel better after coming off it. I should be able to control my emotions a bit better too.  I weighed myself at the gym and I was 65.5kg!!! the most ever, I haven't been able to lose the weight because of the pill. I know I should weigh myself first thing etc so if I did that I would be around 64kg probably, still not good considering my starting weight was 64kg for the 12 week body transformation. I am starting to get worried that maybe I am pregnant but I can't be, I have no symptoms other than the cramping. No weird cravings, eating the same amounts as normal, no weird smells etc or even a change in my nipple colour. All normal! Except my irregular periods that's what makes me think I need to get a scan done for polycystic ovary syndrome or something. I will ask about it and see what happens. Who knows..... I just hope I am not pregnant it is not an ideal time for me. I want to wait until next year before we have another one.