Your husband’s 5th lord is Mars. It is fully eclipsed by a very closely conjunct Rahu.
The current dasa antara is of Mercury Venus. Both these planets are in Simha rasi which is a Dagdha rasi in the chart with no cancellation.
Even if your 8th house affliction is taken care of by doctors, the above weaknesses in your husband’s chart make it difficult for you to conceive. He has to perform a shanti for Rahu and strengthen Sun and Venus (both are lords of Dagdha rasis Simha and Vrishabha) in order to have a chance at conception. Even then, since Venus is also a rogakaraka, there could be other hurdles if Venus is strengthened.