In Sanjivani 1, there was Dr. Aman Mathur, child hood friend of Dr.Juhi.
Could Sid be Dr.Aman's son ? And Sid's mom ,if nurse Padma ,might have been his gaurdian instead of biological mom ?
And they didnt show Anjali and sid's mom face to face. And she may have separated from Dr. Shashank due to Anjali 's insecurities after Dr shashank and padma'a marriage. And didnt want to be found ,so hiding from Dr Shashank.