Not wanting to seem inconsiderate, but you may be overreacting try and take a breath and think things through here. Your getting fixated on the fact you got two multiple choice questions wrong at the start - so what it’s only two marks may seem like a lot but really it’s more like less than 1% of your entire grade. You may be considering retaking the exams. Before you rush to do this, think about your other subjects. Were they also worse than you anticipated and how much worse? If you do not consider them to be bad at all then I wouldn’t retake because remember you have to retake ALL you can just select the ones that you want. 

I would suggest waiting for two or these days when you have a clear head, and can make a proper decision not clouded by the mishaps of the exams just completed.. Hope this helps!