8 days before missed

Jessica • 9y.o daughter. 5y.o son. Trying for #3🌈baby

Been TTC for 5 months (this being the 5th month and almost into the 6th if I don’t get pregnant). I’m supposed to start in 8 days. Like every month, the anticipation is killing me!! I have had 2 successful pregnancies (my kiddos are 9 and 5).

How early is too early to test?!?