Hi,
As I understand, your husband has done a testicular biopsy and the fertility doctor has diagnosed as he having Srtoli Cell Only (SCO) syndrome. His hormones FSH, LH , Testo.,Inhibin etc. are within range and his testicular volume is also normal. In such a situation, as per the present practices, allopathy doctors would recommend an IVF based on TESE and ICSI, you can get more info if required from Googling these words. In this case, natural preganacy option is not available and I hope your doctor must have adised you about it.
However, if you Google for ' treatment of Azoospermia SCO syndrome ' you will get some sites on homeo treatment claiming partial success in natural conceving under this treatment scheme for SCO cases. Since you are young couple, I feel you could try this option for few months before going in for IVF, as homeo treatments are very economic and there does not seem to have any side effects.
Good luck,
Solace
Doctors can decide whether normal delivery is possible? You have to depend on doctor on the spot.