I am sorry for your loss.
Its not for me or anyone else to tell you the right time to have a child.... But as a young parent myself I feel that it is important when making a decsion as to whether to have a baby or not that you think big picture and outside of your desires.
Think about what being a parent means to you. And what kind of things you as a parent would like to provide for a child... the basics should include a safe home, food, cloths, and most of all the love and attention of its parents...
You may be an exception, but the typical 16yr old does not have the means to provide those things for themeselves let alone a child. I know that you mentioned that you work two jobs... what kind of time willl you have to raise and support your child if you are working two jobs? Why would you consider having a child with someone that has already made it clear they are not ready to take on that responsiblity?
My adviced to you would be to focus on bettering yourself so that you can take care of the baby that you are longing for... skipping out on school to have a child would be detrimental to you and a baby at this point... what would you do? work minimum wage at McDonalds your whole life .... or live with your parents? what kind of example would that be?
I know... expecially following a loss the desire to fill that space in your heart can be overwelming... but the best and most loving thing that you can do for your future child is to make sure that you are the best parent you can be when he or she gets here... instead of satisfing your impulses now and you both having to pay for it later.
Good luck. Here if you need to talk.