Cat throwing up multiple times today..

My 2 year old cat. Who has always had a good stomach and never pukes.
Yesterday he threw up. Today he has thrown up about 4 times. Some was food. One was just water/mucus.

I have had cats throw up right after eating. But not more then that and not multiple times a day.
This has me worried. Nothing has changed except I did just open a new bag of food the other day. The other cats are fine.

It is his dry food he is throwing up. I would feed more wet if i could afford it.
He has always been the cat who is done first and tries to eat everyone elses food. I noticed though he seems to be eating alot slower. Tonight he was still eating, when the others were done.

What are reasons for cats to be thowing up numerous times? There hasnt been anything in his food and most is broken down.

Blockage, food allergy, and other illness can cause vomiting.  I'd get him to the vet tomorrow and if you know that he's only doing it with the dry food, stop the dry food and switch to all wet.

Im going to give him wet food for the next 24 hours and see how he does.

Just went downstairs and found 2 spots where he threw up. Is was watered down and not from his dry food. Looks like I need to take him in. Should I give him any pumpkin or probiotics? I will give him some canned food tonight. I wonder if he is drinking more water and its upsetting his stomach. Their water in their fountain is cold because its been cold in the house. I wonder if that could upset his stomach.

He just threw up again. I feel so bad for him. Not sure I should give him a meal tonight. He cant keep anything down Calling first thing in the morning to get him in.