3 days ago there were 2, now 5, so, like I said, once they start, there's no stopping them!
The variety I grow is County Fair - the only one I can grow, as all others have gotten bacterial wilt, to which CF is resistant. And when I got a new packet of seeds this season, it said "improved County Fair", which may refer to the fact that they don't require pollination, and I don't remember this about it before. Something to think about, for those with few pollinating insects, though I don't have that problem.
And talk about going crazy, those West Indian Gherkins have a HUGE number of fruits on them, and vines going out all over! I'll post some pics when I start harvesting. Here are some very small ones: