Please help with puppy's health

My 14 weeks puppy got a runny nose, yellow eyes discharge and sneezes all the time. I can see a soft poop too. His mood hasn't changed and he is eating fine and playfull. I am worried. I have an appointment in 6 days for his last shots.. should take him to the vet or wait ? We went to the beach last week and i gave him a bath (it was a bit cold that day) it started 3 days later.
Is it spring allegies, kennell caugh or a cold ????