at least you have fruit my Black Siam's have blooms but no fruit. and I would love to know what to do to get them to set fruit.

Knowing your zone would help.

A photo would help. But my first thought is that it might be blossom end rot. Blossom end rot looks like a rotten area that forms on the opposite end of the fruit from the stem. If that's it, just take that fruit off. Another one will grow without it.

Angie

They get them on the bottoms and in other places around the tomato. I'm familiar with BER. Just never had it this bad. Are heirlooms more susceptible to it?