<human>: Can you provide a brief overview of the text?

Frank, my 6 month old miniature Dachshund has become a sickly pup over the last two days. He's a healthy weight and has a great life style with 3-4 little walks a day and lots of love. 

Yesterday he started to have green, strange, smelling puss coming out of his eye, which i think might be conjunctivitis. It doesn't bother him, he doesn't seem to know it is slightly irritated. So i booked a vets appointment this morning. But since then he's been coughing strangely and has puked up white bile twice.

He's very happy in him self, healthy wees and poos and eating like normal, maybe a little lethargic but i think i'm over worrying. Is there anything I can do to help him get better, or anything symptoms i should be looking for to help the vet before we see them in a few hours?
<bot>: pup has green puss eye and has been sick a couple of times, any advice before i take him to the vets?