"hadn't had nothing" vs "had nothing"

I think you meant :
1."I hadn't had anything to do yesterday",
This sentence suggests that yesterday you didn't have anything to do YET, but today you probably already have something to do.

2. "I had nothing to do yesterday",
This sentence only tells us that you didn't do anything yesterday. I can't decide from the sentence whether you're doing something right now or not.

andrewaffidonI think you meant :

1."I hadn't had anything to do yesterday",

This sentence suggests that yesterday you didn't have anything to do YET, but today you probably already have something to do.

No.

From a strictly grammatical point of view, this could only suggest that you had nothing to do before yeste

Thanks for the clarification, i meant to say it that way... So, later on that day he finally had something to do. But, the day before it he certainly didn't have anything to do. Am I right?

andrewaffidon But, the day before it he certainly didn't have anything to do. Am I right?

Right! You don't even have to say 'later on that day'. The way I see it is that he didn't have anything to do before yesterday but he probably had something to do yesterday .

Thank you so much for your reply. I was really confused about the meaning of "hadn't had nothing".
Now, I understand it perfectly. Again, thank you so much for your help.