I take you currently hold spouse visa?
You did not entered the UK within 28 days of received of your spouse visa.
You must apply FLR to extend your visa.
Gather all your supporting documents, if its possible submit all your proofs you may have since the day you meet your husband or the day you got married upto present.
HOWEVER
I maybe wrong.. they said the rules has changed about completing the 24 months of stay, it is now 27 months.
I just dont know what date they changed the rule. Im sure other members here will help us.