It doesn't really matter when you got married, the reckoning point is when your apply for leave to remain under visa leading to settlement.
Unfortunately this would put you under the new rules.
You and your husband need to find a legal way to meet the financial requirements for at least 6 months prior to an application.
It seems all is not lost and you still have time as your current student visa is valid for another 12 months.
Sorry to give this information to you. These rules are just plain wrong imo
But until someone applies, gets refused and successfully appeals against the refusal then they will remain as the rules.