I'm not sn expert but I'm going through it for the first time right now. Shayna didn't show till 6 weeks, yes they get aggressive to other dogs (Shayna snips at Ginger our mini bull and chases her away, yes sleep alot, and yes, a lot less play. I just started hearing heartbeats and we are in the 8th week. Shayna's teets are swingin' low lol, we think she looks like a cow these days. Get ready for some amazing changes. I did everything like you... read, read, read... now I wait, wait, wait... Have fun and try not to get anxious |