There is one place that indirectly states this:
Genesis 37:5-11 (KJV) [SUP]5 [/SUP]And Joseph dreamed a dream, and he told it his brethren: and they hated him yet the more. [SUP]6 [/SUP]And he said unto them, Hear, I pray you, this dream which I have dreamed: [SUP]7 [/SUP]For, behold, we were binding sheaves in the field, and, lo, my sheaf arose, and also stood upright; and, behold, your sheaves stood round about, and made obeisance to my sheaf. [SUP]8 [/SUP]And his brethren said to him, Shalt thou indeed reign over us? or shalt thou indeed have dominion over us? And they hated him yet the more for his dreams, and for his words. [SUP]9 [/SUP]And he dreamed yet another dream, and told it his brethren, and said, Behold, I have dreamed a dream more; and, behold, the sun and the moon and the eleven stars made obeisance to me. [SUP]10 [/SUP]And he told it to his father, and to his brethren: and his father rebuked him, and said unto him, What is this dream that thou hast dreamed? Shall I and thy mother and thy brethren indeed come to bow down ourselves to thee to the earth? [SUP]11 [/SUP]And his brethren envied him; but his father observed the saying.
No mention of a child yet to be born here.... he must have been already.
Genesis 37:5-11 (KJV) [SUP]5 [/SUP]And Joseph dreamed a dream, and he told it his brethren: and they hated him yet the more. [SUP]6 [/SUP]And he said unto them, Hear, I pray you, this dream which I have dreamed: [SUP]7 [/SUP]For, behold, we were binding sheaves in the field, and, lo, my sheaf arose, and also stood upright; and, behold, your sheaves stood round about, and made obeisance to my sheaf. [SUP]8 [/SUP]And his brethren said to him, Shalt thou indeed reign over us? or shalt thou indeed have dominion over us? And they hated him yet the more for his dreams, and for his words. [SUP]9 [/SUP]And he dreamed yet another dream, and told it his brethren, and said, Behold, I have dreamed a dream more; and, behold, the sun and the moon and the eleven stars made obeisance to me. [SUP]10 [/SUP]And he told it to his father, and to his brethren: and his father rebuked him, and said unto him, What is this dream that thou hast dreamed? Shall I and thy mother and thy brethren indeed come to bow down ourselves to thee to the earth? [SUP]11 [/SUP]And his brethren envied him; but his father observed the saying.
No mention of a child yet to be born here.... he must have been already.
The verse speak also of Her mother...does that mean Rachel was still alive when he had this dream?