I have a 3 year old bitch whom we mated for the 1st time on 27 and 29 march, if she is pregnant that would make her 50 days. She does look a bit wider and her nipples are slightly swollen, she has been off her food for about 4 weeks now and completely refuses her usual dog food i am having to cook her mince which she is eating. she has been a bit sicky, but apart from that does not look abviously pregnant, should she be obviously showing by now?