D.B.
Hey - this is a good thing maybe! It is awesome that you are working out more! Good for you! You are starting to build muscle and that weighs more than fat. Your metabolism has sped up and so your body does need/want more fuel. You will burn up your food calories more quickly. You should be eating 5-6 small meals a day with protein in every one. Make sure any carbs you eat are complex so they are digested more slowly. Be sure that your cardio is not going over your maximum heart rate or you will not burn fat. Do you have a monitor of some kind that is keeping you in the target range? You can also supplement carefully to get nutrition directly into the cells. Excellent hydration is essential - don't use Gatorade or those other vitamin products from the store (too much salt and sugar) - there is something you can get online that is much healthier.
And don't weigh yourself every day. Go more by how your clothes fit! Don't stop - it will work!