i have an 8th month old dobe who started her first period about 3 weeks ago. since then her period has stopped but i have noticed that her nipples have swelled and become slightly saggy. she hasent been let loose or been around any males that i know. she did escape the yard for about 10 minutes. i also left her with a friend for a weekend, but my fried said she wasent around any males. is this normal for their nipples to slightly swell. shes still hyper and eating the same. is there any reason for me to be paranoid.