Pos covid result, then neg then pos?

[Melinda76]

I've been isolating with covid for the last 5 days after strong positive results on LFT test. Yesterday was 5th day of isolation tested on evening and result was neg. Tested again this afternoon and there's a faint positive line - what's happened?

Am I still infectious? Do I still isolate? I feel fine in myself, but good job I didn't go into work today.

Any advice?

You dont need a negative to stop isolation. You can stop after 5 days if you have no fever

Stop testing and isolating