I'd be wary of thinking this has anything to do with your mum or a mid life crisis - yes there are hormonal changes but all too often the term is used to disguise very real issues or fears that need to be resolved.
Some shots in the dark here:
Is everything rosy in the newly wed garden?
You jokingly told us he made you wait. Maybe the wait was too long and you need to make up for lost time
Maybe you are in a transition that will take a little while to settle. I think you said it was a fairly quick decison. Maybe it's just taking a while for you to adjust to all the implications, including fears for the future and the responsibilities of love.
You're way more responsible in terms of your ability to face and deal with problems in your life than your mother, so please don't let past history make you think you are not bigger and better than that. Recognise that this fear of turning into mother/grandmother is an understandable fear that you have expressed before, but there is no evidence for it and it just weakens your ability to break free of the past. You deserve your happiness, IvyRose, no ghosts from the past can take that away from you.