5'6 ladies who've lost over 50 lbs?

First off, congrats on your progress thus far

I forgot how to post pics, but there is one on my profile page. I weighed about 170 throughout high school, so I was a little on the thick side, but not super overweight. When I got to be about 19, I started piling on the weight. By 21, I was 225. I stayed that way for a good while, probably until I was about 24. To be honest, I think I lost my first couple of pounds just from being a poor college kid that could not afford to eat out a lot, as I had moved out on my own. But the real difference came when I stopped drinking soda. I lost a noticeable 10 lbs. I started walking around more on campus and sometimes walking around the neighborhood and soon I got to 200. I stayed at 200-195 until I was about 26 and I started really thinking about not eating so much fast food and in large quantities. I started a vegetarian way of eating. I also started trying to workout at least 2 times a week. I did that starting the summer of '12. Just a subtle change, really. I still ate cheese pizza, mashed potatoes, mac and cheese, etc. I did implement more veggies though. By summer of 2013 I was down to 186ish. I implemented more exercise but still ate pretty badly. Sweets were my weakness. I still ate pizza often. I got to about 175 with the extra exercise. I started logging a little more often, but I was doing the 1200 cal, super high carb diet that My Fitness Pal gave me.

Winter of 2013, more specifically around Christmas, I started following random people that had great weight loss success on Instagram. There I learned about IIFYM (If it fits your macros) and learning about TDEE (how many cals my body expends on its own if I were to lay in bed all day). I started eating meat for protein again, lowered my carbs and practically vanished any white carbs. Upped my fiber to the recommended 30-40 g a day and upped my fat. Since then I have gotten down to 161. During Easter weekend, I slipped up an awful lot and haven't exercised much so I am back at 165. But that's pretty much my story. I am hoping to get to 155 before I get pregnant, so if I gain the expected 25, I will be at a weight that I believe I can still work with and not feel overwhelmed again.

One thing I do find helpful is meal planning the day before. I spend about 20 minutes a night before bed logging what I expect to eat the next day. I make sure it fits my cals, protein, fat, and carbs. I try not to stray from it too much.

Thank you for your story congratulations on your success.
I would like to learn more about TDEE and IIFYM.... Where would you suggest I look at/read to learn more?

https://www.youtube.com/watch?v=_S-drOj-xAk