No Weight Gain
 

So I got my baby on March 13. Its been almost one month and she has not gain an oz. I took her to her first vet visit March 16 and she weight 1lb 2oz. I took her in for her third visit (second visit they didn't weight her? Not sure why) and she weigh the same exact weight, 1lb 2oz I work until 5 and her Doctors appt was at 6 so I rushed home to get her with out feeding her like I normally do when I get home and took her into the vet. I have a bowl of food and water in her x-pen all day so she eats whenever she gets hungry. But..... could that had made a diffrence? Shes seems bigger and longer from the first time I got her but she STILL weighs the same I'm a little concern now... shes due for another follow up in 3-4 weeks.

Oh and BTW.... she is running, eating, drinking and playing just fine. Just not gaining weight. I have her on Royal Canine Puppy 33. Should I switch? And what would you recommend?

Another thing is..... my vet recommend for Libbie to get the Lepto and Lime(I think thats how you spell it) shot. But I heard so many bad things about Lepto... and considering my baby only still weighs 1lb 2oz should I go forward with it or stand my grounds and say NO WAY!?