I need help!

Hey girlies! I need some help/advice.

Over the last two/so years I went from weighing 180 (and losing weight) to 220 (and gaining) my birth control was switched around this time and I seen a new OB last year and got switched to my old one (I’m still gaining weight, like 5-6lbs a month) my pcp done blood work last year and everything came back normal. I’m eating pretty good (occasional give ins, bad choices) and I drink water with the expectation of 1 soda a day (some days no soda only water) and i do some exercise, but I still just keep gaining, has anyone else experienced this? What should I do next?