also how many carbs should i have in a given day and how would i measure that out?( slices, grams, ect.)
This can depend on many personal factors.
This answer can be more than just your personal particulars/activity, such as: your height, weight, age, and sex, your activity level, your allotted calorie level. This answer can also depend on how well your responding (feedback) to deficit/carbohydrate ratios, length of time, and lastly, and certainly, not exhaustive, your placement in your personal goal.
What have you been doing for your diet the last few weeks, months?
If you have been responding well with just a calorie deficit, with no manipulation of carbohydrates, and fat loss is coming in at a healthy rate, there is no reason to make any changes. Enjoy your carbohydrates. This can depend of course, but on "the surface", this is true, with the "limited" information I know about you.
There are other personal variables that one may have to consider. Open up on your personal goals, and personal situation.
I ask this because, some are more sensitive to carbohydrates as compared to others, and some can be highly insulin resistant, and some insulin sensitive. So, carbohydrate consumption can be highly variable depend on the circumstances of the person.
For example, when my BF is high, I can eat boat loads of carbohydrates, keep a running calorie deficit, and lose fat tissue. For another this could be a recipe for disaster.
The simplest way to determine your macro-nutrient grams, is to simply observe the label.
When you do this enough over a long period of time, when it comes to food without labels, you will have a good idea of the macro-nutrients/calories/serving size, just by looking at the the food item you are wanting to consume.
Best wishes,
Chillen