I'm guessing you mean 20 follicles? The follicles are the patches on your ovaries, like little fluid filled spaces, that they count. Each one might contain one egg, or none. The eggs are so tiny, they can't actually be seen on the scans. When the time comes for collection, they then drain all of the fluid from each of the follicles that are big enough, and count up the eggs then.

I would say that your follicle count is pretty good, for day 8. On my first and only (because it was successful) cycle, I had about the same, I think, and when I went back for another scan on day 10, they decided that day 12 would be collection day, because the biggest of the follicles were big enough. I think they drained about 12 follicles (some are always still too small to have any chance of containing a mature enough egg) which I think is also pretty normal. However, I only had 3 eggs between them.

My FS said that he aims for around 10 eggs. You will see people who have many more eggs collected, like 26 at a time, and so on, but that's the extreme at the other end. I had very few, but there are also some ladies who have none. As my FS said, it only takes one to make a baby. On a first cycle, the FS is likely to have been a little bit conservative with the medication doses, so he can see how you react, and minimise the rick of OHSS, which would not only make you very unwell, but also means they can't so a fresh transfer.

It sounds to me like you're follicles are coming along just fine so far. Best of luck to you!!