Recently my 2 unfixed dogs hooked up and we've suspected my dog is pregnant now because of it. Shortly after my female got out of heat, we got a young puppy and noticed recently he's been trying to nurse off of her. He's about 10 weeks old now and started trying to nurse at bout 7 or 8. We've been stopping them from letting him nurse but we're starting to think him trying means she might be pregnant. Could that be a possibility?