Late BFP

Anybody kept feeling pregnant but kept getting negative tests until It was late in the game. To be more specific you didn't finally get your BFP until 8 weeks or beyond? Symptoms including excessive sleeping, eating, nausea, breast fullness, weight gain,  no period, and this weird one which is feeling pressure or aching maybe even a feeling of flutters in my stomach randomly throughout the day especially when I lay on it.