How do I tell if my beagle is pregnant

The best answer would be to go to the vet, because the earliest method of detection is ultrasound.
But I googled(I seriously love this search engine) it and here's what I found:
- An early sign of pregnancy is a decreased appetite for a few weeks. As the pregnancy progresses her appetite will then increase.
- Watch for a sudden change in her behavior. Either a decrease in activity, or a she will become more or less affectionate.(All dogs react differently to pregnancy, the main thing to watch for is the sudden change.)
-Feel the abdomen. Any movement felt in the abdomen is pretty much a sure sign your dog is pregnant.

Ummm there is one way u can tell if she is pregnant... check her breast.. they will get really big.. considering they will be filled with milk