Just think how lucky you are jadyn. You have a lovely bright son who is going into an apprenticeship and will probably do very well in life, and a lot of that is down to your brilliant parenting. He is still coming home at night and you will start to see such a difference in him and will have to learn that he is now in a 'man's world' and will have to take the rough with the smooth. You will need to step back from him now and watch him develop, to treat him more like a friend and less like a son (although he will come running when he want's you).
You haven't got a child any more but you are at the beginning of a lovely new stage in your life and his and it's just as good. No more worrying about school reports, parents evenings, etc. etc!!
You should be very, very proud of him.
Treat yourself, if you can, to some new things just for you and think of what the future holds. You can't get the past back.
Well done, to you and your son.