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Hello. I'm sorry to hear about your dog.
It sounds like he may have gotten into something that is upsetting his stomach. I don't think it sounds like an obstruction, if he ate yesterday and kept that down. If you want to try giving him something to settle his stomach, you can pick up some Famotidine (Pepcid AC) and give him 20 mg every 12-24 hours. I would also try to feed a bland diet tonight- chicken/ rice or hamburger/ rice. That will be easier on the stomach.
If the vomiting continues tonight, then I would have him seen and get some anti-nausea and fluid injections in him to help with his hydration. I would also probably start some antibiotics in case of some GI bug.
I hope this helps, let me know if you have any other questions.
That could definitely do it.