Is She Pregnant?

by Shannon
(Ottawa, KS USA)

I have a lab and Jack Russell mix. I think she could be pregnant, well I saw her do the do. But its been about 3 or 4 weeks. I just cant tell. Do you know how long a dog like that would be pregnant? She's a few pound's over weight to begin with anyway. I can't be spending money on no ultrasound. We could be having puppies OH MY GOD! Is there anyway of telling besides weight gain?