Hi! So I know my tomato plant has "something" but can't identify it... Started with leaves doing some curling and getting yellow spots... then small holes... Now it's progressed to the stem with blackish brown spots. Am I dealing with one thing? More than one? I purchased some Serenade Disease Control spray and sprayed yesterday. This morning is the first time I'm noticing the stem issues. The leaves started having problems over last weekend. I purchased this from a nursery and it has been indoors for the week. I planned to transplant it to a new (bigger) pot with new soil today - but won't waste the time if this is identified to be something that will damage any fruit that may be produced. HELP!! This is my very first plant!