Hi Clarissa, no question is a problem even if it has been asked before. You can spend you carbs on anything although you wont get much for 20g. The only exception to that is the bad carbs like bread, rice, pasta, breakfast cereals etc but you would probably only a couple of slices of bread for the 15g you have left (well 12g actually) and dont forget there are carbs in most things except meat so 15g left is not a lot. I personally can only manage 40 to 50g as even a tomato has 5g, carrot 6.5g and half an apple is 15g so that’s my 20g well and truly blown. We also count total carbs not nett, which is the higher number i.e. carrots serving 6.5g total, 4g nett. So it does bump up the numbers.
Give it a try by logging in something like myfitnesspal and you will see where the carbs are heavy and be able to work out your own plan. Let us know how you are getting on and shout out if you have any more questions.