When you cannot find bananas that could mean 2 things. 1st It could mean that she turned hermie on late flowering and sometimes the bananas are stuck/prisoners from the buds so you can barely see them. 2nd Your plant is an hermie since day one but your hermie is so mostly female that it was impossible for you to spot the few bananas that were popping. If you harvest in 2 weeks then you seeds will be "viable" , I mean they will be mature and will be able to sprout.