I bought a basil plant on Friday at Trader Joe's and it was bright green and healthy, pretty mature. Today is Sunday and I came home to some dark spots on the leaves. I had not watered it since I bought it and it's been in my kitchen, so not receiving much light at least for the past 24 hours, as I was away. Is my basil wilting or does it have bacteria leaf spot? If it is bacteria, is this harmful to humans? And is there anyway to save my plant or should I return it?