I was exactly where you were back in December. I had my DH take pics of me for "before and afters" of a new workout regime that I was doing. Just amazing how denial will go right out the window when you lay eyes on your pics! I had no idea how large my backside had become. It gave me the motivation to do something about it.
I now exercise 6 days per week instead of just 5. I do much more strength training than I did before too and I workout to get DOMS every time. I also track my calories, which I never did before. My thinking was that - hey, I do an hour of Cathe 5 days per week - I can eat anything I want! Ohhhhhhhh - how wrong I was!!
I use sparkpeople.com and use their free calorie tracker, but there are also other tracking programs out there too that might work better for you.
Obviously water, fruits, and veges are important too. Also, finding healthier substitutions to the not-so-good foods that you are currently eating will greatly help you not feel deprived. Once you successfully make a substitution in your daily diet, make another one until eventually you are eating much healthier. It's a slow process - don't tackle it all at once.
After my wake up call, I have dropped 22 pounds and have gone from a 16 to a 12. I still have about 10 more pounds to lose, but slow and steady wins the race. My average loss is just 1 pound per week, which is fine with me b/c I know that fat loss is slow, and slow loss is more sustainable. I have also visibly gained muscle so that will slow the loss as well but increase the metabolism.
Bottom line is; it takes some commitment on nutrition AND exercise. Just keep in mind that you don't have to be perfect. I have blown my nutrition out of the water on most weekends due to having nights out with drinks.:-( but....I have still been successful overall. Persistence will beat resistence every time!
I hope this helps and best of luck in reaching your goals.
Angie