As it appears, Worf and K'Ehleyr fooled around during episode "The Emissary" (stardate 42901.3). Alexander states in a later episode ("New Ground") that he was born on startdate 43205. Then we see Alexander for the first time during episode "Reunion" (stardate 44246.3). This would suggest that Worf sees Alexander for the first time when he was about 1 year old. But by this time Alexander is already walking, running, and talking pretty well. Do Klingon children just age quicker or was Alexander older than 1 year old?
Then during episode "Firstborn" the Alexander from the future says this:
Suggesting that Alexander was 3 years old during episode "Reunion". This would mean that Alexander was already born and about 2 years old already during episode "The Emissary" which would mean K'Ehleyr was hiding him back then. But according to episode "The Emissary" K'Ehleyr and Worf had not seen each other in 6 years. So how would have Alexander been conceived 2 years prior to episode "The Emissary"? I was curious how this is reconciled in canon. Is Alexander not really Worf's biological son?
Then during episode "Firstborn" the Alexander from the future says this:
K'MTAR: I am your son Alexander. I have come to this time from forty years in the future.
WORF: P'tak! Tell me the truth or I will kill you.
K'MTAR: Look at me. When we first met you said I looked familiar.
WORF: I could have seen you on the Homeworld.
K'MTAR: No. Look closely. I am your son.
WORF: If you are Alexander, you will remember your mother's last words before she died.
K'MTAR: I was three years old. She was dying when we found her. She barely managed to whisper my name and then she took my hand and placed it in yours. Then she died. And then you howled in rage and said, look upon her. Look upon death and always to remember. And I always have.
Suggesting that Alexander was 3 years old during episode "Reunion". This would mean that Alexander was already born and about 2 years old already during episode "The Emissary" which would mean K'Ehleyr was hiding him back then. But according to episode "The Emissary" K'Ehleyr and Worf had not seen each other in 6 years. So how would have Alexander been conceived 2 years prior to episode "The Emissary"? I was curious how this is reconciled in canon. Is Alexander not really Worf's biological son?