Call it flat then. Better than dropping. Although that's not a reason to not shoot, it does mean things could be more exciting.
What is your evening like in terms of being able to monitor? Do you have plenty of test strips (ie. more than 20) around?
You have a couple options. One (my favourite) is to shoot the full dose, get a +1 and a +2. Note, first time Neko gave me a green PMPS (yes, always night time!), she bounced right away. Second option is to keep stalling without feeding until you get a number you feel comfy shooting. You are just a little over 20 points below what you have shot before. Note, stalling is a bit like a dose reduction. The downsides of this stalling are two fold. One, kitty can start heading down without food. And it can put you further behind schedule if that is important to you. Third option is a reduced dose. Since you just increased last night, not that much of the larger depot to influence the cycle. Normally a reduced dose acts a lot like it would with the regular dose in the first part of the cycle, due to the nature of the depot.
Most important is the vomiting and whether you think she will eat and keep dinner down.
See you in 15.