My dog was diagnosied with chf wed. I have her on med 2 lasix pills aday a heart pill

she seems so tired and te vet gave her a laxative yesterday it make her tummy hurt and she is not eating since how long do I let her go and not eat? Her belly is making noise like upset a little and she threw up last night

Talk to your vet. Some heart medications can cause nausea. I'm not sure why a laxative would be given unless she was also constipated. Was your dog x-rayed and/or ultrasounded to diagnose? If not ask for a referral to a veterinary cardiologist or an internist for further diagnisis and treatment.