i need some weight loss help

[feminazi]

first, some background. i'm a 54 YO female; menopausal, been working out regularly (weights, various aerobic activities) for the last 10-15 years, at least. i'm 5'5" and 151 lbs. current meds are prozac (20mg), lipitor, synthroid and an estradiol patch.

since about last thanksgiving, i've gained 8 lbs. i've varied my workouts, changed my diet and i still can't lose a damn pound.

current schedule normally goes like this:
monday: shoulders, bis, tris
tues: 2.5-3 mile run or 45-60 mins on my exercise bike
wed: legs
thurs: off
fri: same as tues
sat: chest, back
sun: 3-4 mile run

i'm doing 2-3 different exercises per body part, with 10-12 sets total. the 1st exercise per body part is usually with a heavy weight so i can only do about 3 sets of 4-8 reps. the remaining sets/reps are with more moderate weight. total workout time is between 45-55 mins per session.

over the past 8 months, i've also cycled thru circuit training and lighter weights/more reps. i'm about to change up again since i've been doing the current schedule, with some small modifications, for the last 6-8 weeks.

i vary the intensity of my runs and biking with some sprinting and simulated hill climbs.

altho my diet was pretty good before, about 4 weeks ago i made a conscious effort to add more vegetables, low glycemic fruit (apples, berries, cantaloupe) and salads. i eat no rice, potatoes, bread, candy, cakes, cookies, donuts, chips, etc, etc. i do have one small square (1.5" x 1.5") of carborite chocolate most days.

i'm not a big meat eater, but average about 120 grams of protein a day, 90 net grams of carbs (minus fiber grams), and 90 grams of fat (from primarily olive oil, flax, whole milk yogurt. i track everything on fitday and am averaging 1750 cals/day. that's total cals and doesn't take into account the cals i'm burning off via exercise each day. most days, i'm still hungry even at 1750/day.

i primarily drink water with 1-2 decaf, diet colas a week. i easily consume 70 oz or more a day of water.

i saw the doctor recently to re-check my thyroid and it's fine...t4 is normal; tsh is low. i gave her a run down on my activity level and diet and she said, "well, you're doing everything right", but had no suggestions for me.

well, obviously i'm not doing everything right or i'd be losing weight. i don't feel i've increased lean mass and decreased fat cuz my clothes fit the same.

i carry my weight around my waist. with my history of high CHO/triglycerides and a fasting blood sugar that hovers between 110-117, i'm convinced i have metabolic syndrome that's making it tougher for me to lose weight.

the question is: "how to i attack this?" i'm already eating low glycemic foods. i'm already running/biking and lifting weights. i don't feel i can go much lower on my carb intake and still be able to work out effectively.

does anyone have any suggestions i can try? more diet changes or workout regimens that might help? am i eating too few calories?

any input is appreciated....thanks.