Although it’s really faint I’d still ring and let them know, they might advise you test again in 24 hours and see if it’s got any lighter x
Mine was like this, after a few days it was clear
Go back again. You may have some retained tissue x
Now I’m all anxious again because this was the final hurdle before starting to move on to a new chapter and I feel like it’s still looming over me 🥹