Yesterday, I asked this in the general question forum but was directed to this forum. I apologize for the repeat question!

I'm new to gardening, so you can imagine my delight when I noticed the female flower of my watermelon plant had been successfully pollinated 2 days ago. While admiring my tiny watermelon baby, I noticed a small bug on it and remove it. In the process, I accidentally scratching the surface of the watermelon with my fingernail. Later that day, I noticed the scratched area turned black. I've read that black spots turn into rotted areas of mature watermelons. Is this true? Is my watermelon ruined? Should I just remove this baby and wait (hope) for a new one to pop up in its place? Thank you!

Just let it grow. It most likely will be OK with a small blemish. If you remove it there will not be a new one at that spot to replace it. On other vine ends you might get more flowers and melons. The bugs will be more detrimental; keep an eye out and treat before it gets to be a big problem.

Thanks, Paul! I'll just wait and hope for the best =)

Nope it will rot. Take it off so the vine can put it's energy into another healthy fruit. Good luck I can't wait to get some melons!

It might have been the bug-bite, and not your fingernail, that caused the blemish.

I would wait at least a week to see whether the black area spreads or shrinks.