dog threw up multiple days

hi there. my dog got into the trash 4 days ago. she proceeded to throw everything up the next morning, and we thought she was fine. she was fine the next day, but then threw up today and yesterday once in the morning. it was dark yellow and had some hard round things in it. today there was worms in it. she’s on simparica trio, so i’m not sure what she would have gotten it from. the worms weren’t moving or anything. she also had a fecal test done last month and it was clear. my other two dogs i have are fine. just wondering what it could be. we’re planning on going to the vet on monday but want some insight. thank you. 

Hello;  I'm afraid that I don't recognise anything here; I wonder whether you had the facilities to put it in a lab pot (use gloves) and have your vet or - if your vet isn't sure and it seems to be of that nature - parasitology lab check it out.   Whatever the cause, if your dog continues to vomit then she may need symptomatic treatment or further investigation.  Depending on the severity, this could be needed before Monday.  Please will you let us know how you get on?

Something got muddled there.  With apologies, I will try again.  I'm afraid that I don't recognise anything here, but your vet or parasitology lab might offer more insight.  If you have gloves and a pot, perhaps you could save the sample. Whatever the cause, repeated vomiting often necesitates symptomatic treatment so please do get in touch with your vet sooner that Monday if necessary.