Due date/pregnant - irregular periods

What do I do? I have irregular cycles between 27-49. Yesterday on CD 42 I took a test and had a faint positive (at 3pm) this morning with FMU CD 43 I took another test and the line was slightly a bit darker so I got a digital clear blue took that this morning about 10:30 after holding my wee and it says not pregnant.

I know it’s probably because I’m early because it’s very rare to get false positives but now I’m worried that the other test are evap or something.

Should I just wait until I get a positive clear blue or would the doctors be able to do a blood test? Because I’m irregular I have no idea when I ovulated/ how far along I am etc if I am pregnant.