I'm 21 years old I missed my period for about a month in a half now, I know for a fact I'm not prengent.I been under a lot of stress this past few months but my spouse don't believe me he wants me to be prengent. How I make him understand I'm not prengent and not ready for a boy.

First of all, I would strongly recommend to see a doctor because generally it is not normal not to have your period if you are not pregnant. It is probably nothing serious but do get it checked. Secondly, there is obviously a conflict between you and your husband about children. It is quite common to have such problems and unfortunately there is no easy solution here. If you feel that you are absolutely not ready to have a baby, tell your spouse firmly, in the end it is YOUR body the baby would start its life in and as a woman you would have to take much more responsibility for your child no matter how helpful your spouse promises to be. Try to reach an agreement such as if you want children in future, say to your husband that you are happy to give him a child but when you are ready for it. If you absolutely do not want kids either now or later, don't play with your husband's feelings and tell him the truth. If his love to you is greater than his want for a son, he will understand and accept it; if not, let him go and have a family with a woman who wants children too. I know it sounds cruel to you but it is also cruel not to realise your husband's dream of having children. I wish you the best of luck and I hope everything turns out well for both of you.