You are 37 and also taking a bc pill....I believe that's inevitable weight gain, unfortunately.
Let me speak to you from an "over 40" point of view which you will be approaching in 3 years. At your age, you are probably seeing a natural slowing of your metabolism. It creeps up on most of us sometime after 30. I'm 48 now and can tell you I started noticing a weight gain mid to late 30's. I was into aerobic classes and concerned about my weight so I hadn't changed anything. I did actually decide to do anything about it until I hit 40 and that's when I picked up my first real dumbell.
You say you are not working out at present due to other obligations. I would highly suggest you evaluate your schedule and try to find some time to get some type of workout in. If you are in fact suffering from the middle age curse of a slowing metabolism, you need to up your activity, preferably adding a good concrete weight training program to assist you in building lean muscle which will in turn, boost your metabolism. Cardio for fat loss, yes, but the weights is the key to quickening your metabolism. You should find in doing so (weight training), that your diet woes will be easier to work through (IMO).
Best of Luck to you pawwax!!