Tomatoes were growing great till a week ago. Thought i was dong everything right. have tomatoes golf ball to hard ball size on the vine now. My gardens are raised the soil is a mix of native with Miracle grow vege soil and composted manure. ph 7 6 1/2 to 7 hours of sun, consistently watered. My reading and plant appearance points to maybe fungal, but I'm learning . Can someone help before I'm forced to buy radiated ones from the store?