losing my motivation :(

So i will be 18 weeks pregnant on Wednesday and in the last four days i have felt no motivation to do any of my workout routine. The weather has been freezing so that has not helped any. However, today i got my a$$ in gear and did my two mile walk to the beach and back. It felt good, but i could tell i had skipped four days. So how do i prevent myself from losing any and all motivation to stay in shape while growing? I hit youtube up for some inspiration and only found minor support. Wednesday Colin goes back to school so i will once again attempt my boring pregnancy workout dvd. Aside from that i am starting to understand why so many pregnant women gain more pounds than is recommended. I hopefully will not be in that category this time around!