Her vomiting should have little to do with her heat cycle. I would call your vet to get an opinion. I'm sure they will want to take a look at her if this persists.
In the future (especially since you have an intact male in the house) I would chart her heat cycles. Even though the cycles are not exactly six months apart you will have a reasonable guide.
In the future (especially since you have an intact male in the house) I would chart her heat cycles. Even though the cycles are not exactly six months apart you will have a reasonable guide.
