The first piece of homework your nutritionalist will give you is to make a food diary, this is exceedingly important, you have to be TRUE to yourself about everything you pop in your mouth.
Get yourself a book, or set up a table on the pc, ie:
Breakfast
food/drink calories
Lunch calories
food/drink
Dinner calories
food/drink
Supper calories
food/drink
Snacks calories
food/drink
You can add on each day the exercise you took, and how much you burned off in calories..
Fill in a sheet every single day, bring it to me and lets look where your succeeding and where adjustments could help with weight loss/gain as part of your move towards a more healthy lifestyle.
Begin now.... you will see results, and btw, drink plenty of water each day (2 litres), cut back on tea and coffee, and keep away from concentrated fruit juice.