Welcome, Perhaps you should read this and make adjustments to your present intake by increasing lean protein, grains/beans and legumes, and low fat dairy servings. Cut out any unhealthy foods which only give you empty calories and don't help you build lean muscle mass. snack chips, crackers, sodas and white breads all have high calories and you may think these would be good choices but they are unhealthy choices full of fats, sugars, sodium and artificial additives that won't help your body metabolize nutrients well.
Muscle weighs more than fat. You are getting fitter with all that biking and I'd bet dollars to donuts you are losing INCHES off of your body. Drop your caloric intake to between 1700-1900 three times a week and see if it helps. On the days you exercise make sure you eat to fulfill your caloric needs.
lol, where are you located in the World? Phentermine is related to the PhenPhen scandal from YEARS ago here in the US. Please google it and find out about all of the lawsuits related to Phetermine. This is why diet aids and pills to help keep you awake don't have it in them anymore in the US.
Eat lean, whole foods Eat smaller portions Exercise at least 1 hr daily more than you do right now, it doesn't have to be all at once, but it needs to be done every day Drink at least 64 oz of water a day
Hey there spunky.. come over to the 50-100 lb weight loss community and seek Judge advice. She too is a spunky septuagenarian who has lost a hundred lbs with diet and exercise..and has maintained that loss for 9 YEARS. Chat with her eyes a font of information.