ANSWER - This is more a request for divination than a question. Not that that is a problem but I'm always reluctant to say yes or no to these type of questions. That's partly because I have too much integrity to try and pass off a lucky guess as fortune telling and partly because I genuinely don't know enough about you to predict your future.
However I'm going to suggest the type of questions I'd be asking myself in your shoes and then some basic divination you can do to get a steer on things. Are either of you having second thoughts. Are there impediments affecting your wedding that may also have an impact on you if you marry. Do you love him as much as he loves you and vice versa? Can you imagine him old? Do you agree in the main on sex, politics and religion? Who chose to change the wedding date? Why are you letting anything or anybody dictate when you marry?
There are no right or wrong answers but I'm confident that if you meditate on the above you will come closer to the truth.
With regard to the divination - You can explore whether this marriage is in your future or not. Get a basic pack of playing cards (not Tarot) and remove the suits of clubs and diamonds and the jokers. Shuffle the remaining cards and lie the first five cards face down on the table. Uncover and look at the proportion of hearts to spades. The greater the number of hearts, gives an indication that this wedding will be a good venture for you.
I'd also point out that a wedding isn't something that may or may not happen to you. If you want it the future is in your hands to make it happen.