Positive then neg preg test, anyone had this?

[mower]

Tested early hours fri morning and faint positive. Then today around 930am a negative. Don't feel pregnant at all, and have not had a period yet since bf dd, 7 months. Can I take it i am not do you think?

I would suggest doing another test, maybe on was faulty? False positives don't usually happen but false negatives tend to be higher in number. It took 3 pg tests to find ds