7 days late confused how?

Rakhee

Ok where do i start. me and my partner have trying for our second baby for 8 months. my first is now 19 months. my period is always bang on time. we were trying for july till date see my pics attached . my last period was 30th june. im almost 7 days late. i done a clear blue digital and 1st response both negative yesterday. this morning i went to walk in centre and was told negative results. im confused im bloated nauseous randomly and sensitive to smells. am i testing too early? whats happening? should i wait another week and retest? any thoughts would be great ❤