Hi Debbie,
My husband was testing positive for a couple of weeks, but after a week the line was obviously fainter, he was using daily for a long period before this. So in order for a test to still show 2 weeks later, he’s either still doing it, or he’s been using a shed load. I would guess the first, but only you can tell.
I would look for signs like lack of appetite, and mood swings. I could tell because one of my husbands eyes was always more dilated than the other, they tend to favour one nostril.
Please take care of yourself sweetheart, you need to think about you xx