Could I be pregnant?

I got a very very very faint line on my pregnancy test and I am late. I had some light spotting today and very frequent urination. I have another pregnancy test but am really scared to take it. I've had two miscarriages in my life and am scared that this might be again. I am around 6 days late now. Could I possibly be pregnant? Should I take the other test? When should I take it if I should?