1st, CONGRATULATIONS!!!! Marriage is a wonderful union between two people :)
I'm very sorry about the anxiety and neck pain, keep your chin up and stay positive.
The human body is amazing and changes a lot. From my experience, workouts need to differ, keeping the same routine won't challenge your muscles, nor push them to burn fat, (muscles burn fat). Restricting your calories intake is one thing, but burning them off is another. What works is variety, and as you already know, fruits, vegetables, and fish may work best with a workout routine. Are you able to do yoga? How about pilates? Remember to incorporate light weight lifting as well (5lbs, 8lbs) as well, losing weight by doing cardio alone won't tone you up,(I'm sure you want to tone up as well).
I don't believe in scales, as a matter a fact, I never use them, because a number is just that! You should go by how you feel and look in the clothes you wish to wear.
Maybe one night you can do the stationary bike, another night a brisk walk with your husband to be, the following night yoga, and the one after that pilates? Variety is key, keeping your muscles guessing is what your goal should be, this way they don't get used to the same thing. I hope this helped you a little.