Hi, I have an 8 week old rott pup and we have had him for about 4 days now. The first night he was in the kennel and did really good about whimpering for us to let him out to potty. The second night we fell asleep with him in out bed and he did really good as well. The third night he wasn't feeling well and was going potty a lot, having some diahhrea and had an accident. Now last night he was back in the kennel and has diahhrrea so bad he is pooping in there at least 2 times as well as outside. He is going poop like evrry 30 minutes and bleeding a little when he poops. I don't know what to do or how to stop him from bleeding and pooping so much.

This is not about potty training.

You need to take him to the vet. Blood in his stools/bleeding while pottying and constant diarrhea are signs that he is sick. Only a vet can tell you what is causing him to be sick.

Young pups like young babies dehydrate very quickly and can go from okay to extremely ill (death's door) in a matter of hours.

Has he had any of his vaccinations? Have you made an appointment for a well puppy visit and his next set of vaccinations?

He has had the parvo shot. And we have given him a dewormer. Early this morning was the first timw I saw any blood. He is drinking water all day and will eat, bur we are holding back on the food in case rhe diahrrea was from the food change.
This is not about potty training.

You need to take him to the vet. Blood in his stools/bleeding while pottying and constant diarrhea are signs that he is sick. Only a vet can tell you what is causing him to be sick.

Young pups like young babies dehydrate very quickly and can go from okay to extremely ill (death's door) in a matter of hours.

Has he had any of his vaccinations? Have you made an appointment for a well puppy visit and his next set of vaccinations?

The answer is still the same, consult your vet, a puppy this young has very little reserve.
The diarrhea needs to be addressed.