Is this a positive line???

Morning urine test, 10DPO and AF due in 6 days. Line showed up slightly darker line than it did yesterday. Def has a blue colour to the line but it's so faint I'm not sure if it's evap or not as haven't done this test before and keep hearing things about evap lines!??

Picture was taken at around 5 mins after taking the test . I thought evap lines on emerge after the test has dried up?

Please help!!! Thanksssss ladies!!!! X x