Yes the blossom shrivels and drops, but there should be an obvious fruit at that time. If you blossoms are not getting pollinated and are dropping then you can try tapping the plants or you can buy a product called blossom set, that supposedly helps set fruit. Or you can just wait, they will begin to cooperate as soon as the weather improves.
Eclectic gardening style, drawing from 45 years of interest and experience. Mostly plant in raised beds and containers primarily using intensive gardening techniques.