I think something bit me when I was asleep?

My aunt got bit by the same thing I think and she said it was a spider. I'm deathly afraid of spiders and there's a bump on my skin that looks like a mosquito bite, but there are two little marks the size of a pin prick that look like a little bite. I'm just freaking out right now cuz even though I'm positive its not going to kill me it just looks like the spider that did it was pretty big and was crawling on me in my bed at night and I'm just so scared.