Hi I Am In Southern Spain And I Felt Something

Hi
I am in southern spain and I felt something bite on top of my foot over a week ago, didn't see what it was, as it was dark. immediately had pins and needles feeling and after two days went to chemist who said maybe a spider bite, gave me antihistamines and cream to rub, after a week, it's still really tingling and feels bit numb on top. Will this go away? is it normal?
Thanks
Suzanne