That looks just like a swollen calyx. I see them all the time on my girls. Ive seen bananas on dudes up close, and that doesnt look like a male part. Sacks are a bit more oval and or bannana shaped. You good my friend. Though, if you see anything else you think looks like a ball..Just show us and we can help you figure it out. Looks like you got nothing to worry about.
If it does hermie at all. You can just watch out for them and pick them off as you see them.
Cheers brother. :Sharing One: