Pregnant?

mikha

So guys Last sex was June18. I am already 23days late today. Already took 4 test

1st test-July 4 (negative)firstpic

2nd test July 8 (negative)

3rd test July 9 (negative)2ndpic

4th test july 16 (negative)last pic

Can all of these be accurate already? And Can A regular cycle turn to irregular? And ahould I be worried if Im pregnant?

PS: having cramps since the week I expected my period to come