Hey Belinda, I'm inclined to agree with Ron on this one. Check this site out, if you haven't already - Calorie Calculator - Daily Caloric Needs
This is to their calorie calculator, but there are other useful tools as well on this site. In any event, I'd try trimming your calories down to 1500/day - you could probably cut it down even lower, but I'd try that out and see where it takes you. Remember, this is all about trial and error; everyone is a little different. If 1700 isn't working for you, then shave some off and see what happens.
Also, I think FitDay WAY overestimates how many calories are burned throughout the course of a day. If it were accurate, I'd be a size 4 by now, lol. :P Good luck and let us know how it goes!