My Weight Trend- HELP!

Your diary is closed so I can't help you much. If you open your diary and provide some relevant info such as height, age, exercise, etc. I can give you some advice.

I am not sure if anyone will be able to help you much specifically without seeing the food diary that goes along with the weight trend other than to suggest that you not have a "black and white mentality." If you mess up it is most certainly NOT all over. If you slip up just go burn some calories to make up for it or at least to lessen the impact rather than use it as an excuse to binge. Forgive yourself and continue with your plan. Think of this as a learning experience and learn from your mistakes rather than using your perceived failures as an excuse to repeat them. Hope this helps.

I am 5'3, I workout 5-6 days a week doing mainly cardio- I burn about 200-300 calories per session (HRM). And I am 20 years old. I have not been logging my food accurately/ consistently, so that would not help much.

Not logging accurately will tend to mess you up.
Get back on track

AND LIFT!

And be sure you're eating exercise calories!

ETA: This could also be a plateau. Just keep at it

I guess I am really just wanting help on HOW to lose weight. I thought I could do it, but I end up just eating too much and then binging when I mess up. I generally eat 1500 calories plus whatever I burn from exercising. I thought that would be maintenance for me... I guess not
How should/ do I lose weight?

No one can answer this for you. You have to want it bad enough to train hard and make good decisions with your food. Until you reach that point it nothing will change. Good luck!

Going for a long walk somewhere helps me. It gets me out of the house and away from easy access to my kitchen full of food. If all else fails and I still want to eat something when I get back I will have burnt some calories while I was out. Try to find fun, interesting things to do that are not really compatible with snacking. Bonus if those activities also happen to burn many calories.

Get into the habit of sipping on a glass of water to replace munching on junk food snacks in situations where you used to do your heaviest, mindless snack eating (while browsing the web, reading a book, or watching television, for example).

If you drink a lot of juice or soda you will be amazed at how many calories you can spend just quenching your thirst. Drink water. It may take some getting used to but it is the simplest way to start cutting calories without much elaborate planning.

Find healthy replacements for some of your snacks. Think about what you find attractive about an unhealthy snack you are craving and try to find that quality in healthier alternative. A serving of carrots is crunchy and much more filling than a serving of potato chips for way less calories. Dark chocolate instead of milk chocolate can satisfy a chocolate craving.

Also, let yourself have that treat sometimes so you don't go crazy. Just keep the portion under control, but if you go over it do not use it as an excuse to lose control! That is like cutting a finger off just because you chipped a nail!

Edit: However, at 5'3" 122lbs is not overweight is it?

Also while you're logging everything be sure to accurately weigh and measure your food. Sometimes I try to eye ball a serving of rice or pasta then weigh or measure it and realize that my "one" serving is actually one and a half or two! A kitchen scale is a massive helper and can be had for as little as $10-20.