Blossom end rot is caused by two much water I believe. Also you probably don't have any fruit yet because there are no female blossoms yet. The female flower blossom is identified by having the small fruit below its blossom. If you don't have much bee activity that could also be why. Go outside in the early morning hours, about 6-8, you will notice the flower blossoms open. Find a male (ones with no developing fruit)take a q-tip get the pollen and give it to the female blossom...normally the bee's take care of this. In order to get fruits the pollen needs to be taken from one male to a female blossom. Hope this helps.