Zero, Nada, Zilch - No pounds lost

Are you taking your body measurements? I finally figured out that the scale does not always show your hard work and efforts. I may not loose any pounds but loosing inches,

I would feel good about the way I look and feel than be stressed over the what number the scale AKA devil box shows.

You are doing great, don't give up!

I'd be looking for a different trainer.

Do you use a digital food scale?

With inaccuracies in the food database, plus eyeballing sizes, it's really easy to sit at maintenance.

You're working out which means that you're gaining some muscle mass. Muscle weighs more that fat so you might be losing inches and getting tighter but the weight stays the same. It's just the begining. You will start to see some results in a few weeks. Also you probably should up the protein intake and lower the carb intake (unless doing leg day training) because protein does keep you full longer.

In addition to what others have, consider everything you've already gained. You wrote about your fitness, your tone - that's great. But you've also gotten new habits and a bunch of data about how your body works, and those might be more important to long-term weight-loss than anything else. You're putting together a great foundation.

Just a quick note: if you're not including any calories from exercise, then 1525 is not your "net". Your net would be after exercise - after all inputs and outputs. If I'm understanding you correctly, I'm betting your net right now is down in the triple digits, which probably isn't where you want to be.

My sister-in-law was at a very similar height/weight not long ago (we weight train together for 45 minutes 3 days a week and do High Intensity Interval Training (HIIT cardio) 2 days a week). She took her calories down from 1500 to 1350 and had to cut out sugar and bread or she would have NO progress at all. She has PCOS (I would google that to check and make sure you don't have any of the symptoms) My sister figured out that she has PCOS also and after adjusting her diet accordingly, finally began to lose weight for the first time in her life.

There is a sweet spot that you have to find somewhere between eating the correct amount of calories (not too many, not too few) and eating the right KINDS of foods; it can take a little while, but when you find it, you should know within a week. If it hasn't happened in 4 weeks, you need to tweak something. If you plateau for more than 2 weeks, something needs to be adjusted. Your body gets used to what you're doing and you have to keep it guessing.

You're working out which means that you're gaining some muscle mass. Muscle weighs more that fat so you might be losing inches and getting tighter but the weight stays the same. It's just the begining. You will start to see some results in a few weeks. Also you probably should up the protein intake and lower the carb intake (unless doing leg day training) because protein does keep you full longer.

MAYBE some noob gains, but in 4 weeks she isn't going to gain enough muscle mass to stall the scale, especially at 1600 calories per day. It is extremely hard to put on muscle mass, especially enough to stall the scale (in 4 weeks).

What exercises do you do in your 60 minute session?

Who cares about pounds....get a decent bodyfat meter. If you lost bodyfat, you win.

AND get a digital scale. Eyeballing food youre eating way more than u think. Ask me how I know

I wouldn't stress out too much over scale readings---judge your progress by how your cloths fit! Put that dang thing in the closet ????

I have been using MFP to monitor my calories for the past 4 weeks. During this time I have been with a trainer three days a week, 60 minutes a session. I have yet to lose a single pound. I'm 5"4 and at 225. I do feel better and have more energy and have toned up a little but not significantly I also do walk at least an extra 130 minutes a week as required by my trainer. The trainer also set my calories to 1525 and I have been trying hard to keep it there, plus monitor my protein, fiber, carbs, and sodium. I haven't gone over yet. I had a physical in January and everything was normal. I know the weight loss will come but it's very frustrating that I haven't lost one single pound yet. I'm a very patient person but I am starting to wonder if I am overlooking something.

I know the feeling about giving it your all and not losing. I have not lost anything this year. Going to the Dr's tomorrow because I believe I am having some hormonal issues. One good note for me: I just bought some capris that were a size smaller.
Just keep at it and you will see results eventually.