maybe change up ur workout routine every three wks, it helped me! have u seen ur doctor about this? i would get a professional's opinion.

Nope, you can't spot reduce short of having it surgically sucked out of you!

When I see the words "dieting and exercising" I think what do you mean by "diet" and what kind of "exercising"?

If you are trying some weird diet, most times you may lose some weight that may be just lost muscle mass and water and then after the diet you gain all of it and more back.

If you want to clean up your eating pattersn by eating cleaner, that will help your body much more even if you don't see a difference on the scales quickly.

When you say exercising, I would hope that you are doing a good amount of cardio. By good cardio, I mean activities that get your heart rate going and for a length of time. Try some spinning classes or get on the bike, eliptical or treadmill for a min of 35-45min at a time for at least 3 times a week. That's what's going to get at that fat on your body. You need to get your total body fat percentage down and with time, that belly should dwindle.
As for exercising and gaining weight; muscle weighs much more than fat, so you may be replacing the blubber with muscle and that's a very good thing.
Why?
Because muscle burns more calories than fat. Fat just kinda hangs around and annoys us. So be sure to get in a couple days a week on the weight/strength training.
If possible, you could take a few sessions at your gym with a trainer. The trainer will be able to help you put together a good routine that suits your needs and abilities.
Don't forget that you want to change up your exercise plan about once a month or so; don't let your body get used to the same old, same old because it will stop working.
Last, drink lots of water as it's been proven to aid in weight loss.

Stay positive and be patient with your body. It may be stubborn, but you can be more stubborn.
Stick to your plan and with time, you will lose the fat and be in much better health.

If you've been doing the same workout for say the last two months, your body is in a catatonic state, meaning you've gained resistance to what you're doing and no change is taking place. Try to incorporate different cardio if you're not doing much as well, don't do the same routine you've been doing. Perhaps if lifting, try free weights instead of machines, or if doing light weight with many reps, scale the reps down and do heavier sets. putting your body in different shock states will definitely help, without of course overdoing it. Also, diet plays a significant role. Don't drink sodas, avoid sugar at almost all costs since your body naturally produces it and eat more smaller meals like 6 per day, instead of 3 larger meals. Another way that helped me was by JOURNALING all I eat in day, so if I snuck a cookie, I'd tally that extra 180 calories, or a scoop of peanute butter which translated to another 18g of fat. watching this on everything even adding the tbs of mayo you put in your tuna adds up. two months time isn't nearly enough to really notice changes with out signifant diet changes also. don't ever give up