Yes you should be able to see the doctor if af doesn't arrive. I am looking on a phone so the only one I saw a pink line in is the one I mentioned previously. I only got a very faint line like yours but it was after I was two days late. I haven't tested since and i'm now 5 days late. I've got an appointment on Monday, and since af hasn't arrived they should see it on a urine test. I do feel pregnant though, and my periods are very regular and the only time I've been 5 days late is when I was pregnant last so I know I am. How late will you be by Monday? And do you have any symptoms? At two days late I was waking very early needing to wee and my nipples were sensitive, have you noticed anything like this? Xx