Putting on weight yet within my calories

Just ensure that you are weighing/measuring your food. Also if you are new to working out your muscles can get sore and cause you to retain water. The retention of this water can accelerate weight gain. Also it can be close to the time of the month for your cycle or mother nature has decided to give you a bundle of joy (baby). Once you are logging and measuring your food accurately, and burning a reasonable amount of calories at the gym, there should be no weight gain. You can also try getting a heart rate monitor to help you track the accurate calorie burn based on your heart rate. This would be an excellent tool for your success. All the best to you!!!

Buy an use a food scale. Weigh everything you eat

Leppolite wrote: »

the type of calories also matter. If all your calories are consumed from say fast food, then you probably wouldn't still lose weight.

Pay attention to your Macros too

This is not true....

Be careful with your exercise calorie burns......Most calculators (including MFP) overestimate calories burned.
Are you eating back all your exercise calories?

Leppolite wrote: »

the type of calories also matter. If all your calories are consumed from say fast food, then you probably wouldn't still lose weight.

Pay attention to your Macros too

Nope.

I could eat Cheeseburgers and fries all day long, but stay within my calorie goal, and still lose weight. I also pay zero attention to my macros (well, I will look at them for curiosity, but not actually eat according to them). Some days I eat way over on fat, sodium, carbs, some days I eat way under. I've lost 61 pounds eating a diet that incorporates junk food and have paid no attention to my macros.

Macros are not important (to weight loss)--- but you can find tons of threads with people saying this same thing (and others arguing with it). CICO.

I'm going to bet you're not weighing your food properly. There can be huge gaps in food labels. For example, my gerkin package showed I could have three pickles for 30 calories (28 g). I measured out 28 g, which was only ONE pickle. I could have easily added 60 untracked calories to my day without my scale. Imagine if you did that all day long. Let's say your daily deficit is only 500 calories; that's a very small buffer and a very easy way to gain weight if you're not measuring/weighing.