Are you sure your didn't cull a male a wee bit to late? Really ez and if just one drooping sac opened on that side of the plant, and you foliage feed you may just have that small batch of seeds.. if this was hermie issues you'd have male pollen sac's forming filling with pollen, not a preggo.. Save these seeds and grow them out, I bet you get a 50/50 ratio M/F..
How far you along in flower??