question

Q- I have a situation. My period is a little over a week late. i usually get my period a day or two after im supposed to. so I didn't think anything of it. now its a total of 8 days late. I took an over the counter pregnancy test which came back negative. With my first pregnancy the over the counter tests didn't work. So my question is; do you think I should go into a doctor and get tested by them?