After taking undizire kit I checked herself by prega news . I saw 2nd line is very light pink what s it means

How long after the abortion did you take the pregnancy test? If it was soon after, there is still a possibility of pregnancy, or the pregnancy hormones were not out of your system yet.

I have taken 29th oct & clots of bluds came 31st oct mid nght when that my mc comes 27 oct. After 5 days flow of bluds are stop & today 7th nov by herself chcked by prega news & it saw 1st lne s very dark & 2nd line is very light

It's too early to be doing a pregnancy test. You are going to have to wait to see if you get your period next month as expected.