Just did a really stupid mistake!

I bought BIDU March 210 call options for 0.20 today thinking tomorrow it will rebound. Then I just realized that tomorrow is Good Friday and all equity options will expired today. Actually, I already know that tomorrow is holiday but for some reason I thought I still have 1 more day and think that today is wednesday. How stupid I am!!! O well I just wasted $45.50 for the 2 contracts + commission in basically 5 minutes for nothing. Ughhh I hate my self!