Honeymoon ideas?? Really need some help

Shebaloo

My fiance and I got engaged in June 2011 and we had planned a carnival cruise for our honeymoon in May 2012. We had decided that we were going to try for a honeymoon baby but we got a huge suprise and now I am 14 weeks pregnant. Our wedding is April 29th and I will be 29 weeks at that time. Carnival (along with most other cruise lines) will not allow anyone over 24 weeks to cruise and NO cruise line will allow anyone over 28 weeks . We are now desperate to find something fun to do for our honeymoon. Any ideas would be greatly appreciated!

Some more details:

*I am 20 and he is 21 so neither of us can rent a car

*We fly for free so distance is not an issue

*We would like to spend less than $2,500

Thanks!