Thanks to everyone for your input.
The issue with her paws has been going on for a while. If its a contact allergy, it has to be from grass because she had these issues when we lived in a different city. We do use some pesticides but not very often.
Her exercise is not as much as it should be due to work schedules and three kids but again, these issues were occurring when she was getting more excercise. We also tried upping her number of walks per day with no change.
We shop for pet food at pet stores. Nothing from Walmart or other similar stores. As I mentioned, we have tried many different types of food. She just started Taste of the Wild Pacific Stream. If anyone is interested in looking, the ingredient list is on their website:
Taste of the Wild-Pacific Stream Canine Formula
Yes, we have been reluctant to switch to home made foods due to time constraints. Having three kids that are 5 years, 3 years and 5 months old leave us very little free time to home cook food. We will discuss that option after we see how our lab handles this food over the next couple of months.
She has been seen by the vet a number of times for these issues. We have not considered seeing a dermotologist so we will add that to our list of options.
I should point out that the vomiting is not a regular issue. It only happens 2-3 times a year and I don't believe it is related to her other issues. It just happened to occur the day I made my original post. She has not vomited again since that day.