30 day challenge.

I am trying to get back down to my pre pregnancy weight...which is 145 lbs. I am currently at 166 lbs. 2 days ago I cut soda out of my diet and started writing in a food journal. I have cut back on a lot of fast food and trying to make healthier choices. So far so good. I worked out for the first time in 275 days (according to our wii fit). It wooped my butt. I would like to way 150- 145 lbs by July 1st. I want to be able to wear a 2 piece swimsuit again...comfortably. Wish me good luck!