Hi I have planted some watermelon and was looking to see if there were any females on my vine when I noticed that one of my leave had a bunch of ants on it. When I turn it over, I noticed that it had some yellow stuff on it and it was sticky. Should I be worried? And if so, what can I use to get rid of the ants and what ever is making the yellow stuff? Also I wasn't fast enough but there was a red little bug near and he was to fast for me to get a good look at him.