Mention the change in activity level to the vet as well the heat cycle ending. The thing is the 63 day cycle a bitch goes through between ovulation and whelping is the same hormonally whether she is bred or not. So, if she was bred, you might not be concerned if she is doing less in some ways, chilling more. But her body doesn't know that she hasn't been bred. The hormones are dispersed as though she has been so it is completely possible that this is her normal after a heat cycle.
On the other hand, after each heat cycle, there is a risk of pyometra. I wish it uncommon and I have yet to experience it, but it is dangerous and many folks have had bitches that have had the infection. Open pyometra has a foul discharge and you would probably notice that. Closed pyometra is more dangerous. It is a lot like my kidney infection that nearly killed me. The stone blocked the kidney it filled up with pus and was on the verge of killing me. The uterine horns in a bitch can fill up with pus and explode which would kill her. If found in time, they can use medication and when the infection is gone, they can more safely operate, though some vets want to operate when they are still infected. I suppose it depends on whether they think the antibiotics will work in time to save the bitch. Of course this is a worse case scenario and much less likely in a youngster (though not unheard of). So mention it.
First year appointment: usually, my vets checks the heart with their stethoscope, use their hands to palpate the abdomen, look at the eyes and teeth, and give them a parvo-distemper-5-way vaccine and rabies. After this visit, they don't usually see them for 3-4 years when I get them vaccinated again. If your vet wants to do these vaccinations every year from this point, get a new vet. It should be every 3 years and they last 5-7. They are killers so I do vaccinate usually every 3-4 years. Vaccines for bacterial diseases like lepto do not last that long and if you doing those then they have to go in for those usually yearly. Not sure about Lyme's, never did that one. Mine usually want a stool sample and usually I don't bring one, so they do not check for worms. My bad. They should let you know if they want one.
On the other hand, after each heat cycle, there is a risk of pyometra. I wish it uncommon and I have yet to experience it, but it is dangerous and many folks have had bitches that have had the infection. Open pyometra has a foul discharge and you would probably notice that. Closed pyometra is more dangerous. It is a lot like my kidney infection that nearly killed me. The stone blocked the kidney it filled up with pus and was on the verge of killing me. The uterine horns in a bitch can fill up with pus and explode which would kill her. If found in time, they can use medication and when the infection is gone, they can more safely operate, though some vets want to operate when they are still infected. I suppose it depends on whether they think the antibiotics will work in time to save the bitch. Of course this is a worse case scenario and much less likely in a youngster (though not unheard of). So mention it.
First year appointment: usually, my vets checks the heart with their stethoscope, use their hands to palpate the abdomen, look at the eyes and teeth, and give them a parvo-distemper-5-way vaccine and rabies. After this visit, they don't usually see them for 3-4 years when I get them vaccinated again. If your vet wants to do these vaccinations every year from this point, get a new vet. It should be every 3 years and they last 5-7. They are killers so I do vaccinate usually every 3-4 years. Vaccines for bacterial diseases like lepto do not last that long and if you doing those then they have to go in for those usually yearly. Not sure about Lyme's, never did that one. Mine usually want a stool sample and usually I don't bring one, so they do not check for worms. My bad. They should let you know if they want one.
