it happen to me when with this pregnancy i was 5 weeks i had to take the test 3 times and still keept on happening so i had to take it 2 weeks after and then the lines were darker and now i am due in 6 weeks with a healthy baby girl number 4
Yer i had a very faint line at 5 weeks also so i went to my doc and done another urine test and he said the line was still faint so sent me for a blood test and scan and sure enough i was pregnant so that was fantastic and im now 16 weeks with a healthy baby . So good luck and maybe go visit ur doc wen u can .
I had a faint line with this pregnancy and at 7 weeks I was able to see the heartbeat on the ultrasound. I'm 9 weeks now, just make sure to get in to see your doctor as soon as you can.