am i doing it wrong?

No one is going to be able to give you advice without an open diary. Just telling you now, everyone who coems in here is going to say to open the diary first thing. You probably are underestimating food (unless you weigh it) and overestimating exercise. That seems to be most common. You can also be heavy on sodium, processed foods, carbs, etc. but there isn't a way to let you know what to change without more info.

This is my second time on MFP and I'm not losing anything.
This is so disappointing, Im eating my calories allowed and exercising everyday e.g. Zumba, walking, stationary bike?
I lost only 2 pounds my first time on this.
what am I doing wrong, can anyone help me?

How long have you been on MFP consistently? When you say you haven't lost anything, how long?

When you lost 2lbs, how long did that take?

This is my second time on MFP and I'm not losing anything.
This is so disappointing, Im eating my calories allowed and exercising everyday e.g. Zumba, walking, stationary bike?
I lost only 2 pounds my first time on this.
what am I doing wrong, can anyone help me?

How long have you been on MFP consistently? When you say you haven't lost anything, how long?

When you lost 2lbs, how long did that take?

This. We need to know how long you've been at this and what you're eating to help.

I agree not eating enough!! I started to eat 5 times a day but smaller portions.. include fruits and veggies

Also you are spamming the forums by posting the same question in multiple places- that not nice

How long have you been at it? 2 pounds might be good if you've only been on for a week or two. And assuming you're in the US (since you're eager to celebrate your 21st bday), you just went through Thanksgiving which can be rough for everyone's diet. Even if you didn't overeat much, you probably had some foods you're not used to.

You could be overeating or undereating, again hard to tell without your diary being public. With the amount you have to lose according to your ticker, make sure you weekly weight loss goal isn't set any higher than 1.5 pounds per week.

Here is a great guideline for setting weekly weight loss goals:
If you have 75+ lbs to lose 2 lbs/week is ideal,
If you have 40-75 lbs to lose 1.5 lbs/week is ideal,
If you have 25-40 lbs to lose 1 lbs/week is ideal,
If you have 15 -25 lbs to lose 0.5 to 1.0 lbs/week is ideal, and
If you have less than 15 lbs to lose 0.5 lbs/week is ideal.

Make sure you're logging foods accurately and honestly. That means write down every sip, bite, etc. And don't leave off those things you're ashamed of...you're just cheating yourself if you do. You may need to weigh and measure your food at first and check labels to make sure you know what a portion size is. Some may amaze you!

If sodium's not on your tracker, add that to make sure a high sodium diet isn't holding you back. Make sure you eat back at least half of your exercise calories. Eat plenty of fruits, veggies and whole grains. And drink at least 8 cups of water per day, more on your workout days.

P.S. If you weren't working out before, your muscles may be retaining water as part of the natural healing process. As long as you're eating right, tracking accurately, etc this may be the only issue and it will go away in another week or two once your body adjusts.