I have a question about my puppy. She went into heat Friday April 14th, so it has been a month. I am assuming her heat is now over, the swelling is pretty much completly gone and she isnt as restless as she was a few weeks ago. However her nipples are still enlarged. This worries me a little because while in heat there was a 5min or so period where she got outside with a unneutred male dog who would just about stalk us on every walk. Please tell me her still enlarged nipples are just from her still high hormonal levels and not a pregnancy.....how can u tell if she is pregnant besides getting x-rays?? On a different subject, I am getting flea medecine tommorrow....I was planning on gettin Frontline, however I have talked to people t hat love it and others that say it is worthless. I live near a little bit of woods and Nala often runs around in them. Anyone have expereice with Frontline? Any other good brands?? the brand has to be okay for households with cats as well (as ive heard Advantix is bad for cats) THANKS!