Is it really happening?

So I had a miscarriage on the 22nd June and bled for about a week. I was told on the 24th/25th June that my hcg had dropped to 4. I felt anxious about trying again but thought this was would worsen the longer I waited.

I then had egg white CM around the W/c 5th/6th July so we tried again several times.

I then expected my period on the 22nd July but still nothing. Decided to do two tests on Thursday morning FMU. The clear blue manual test came up with a cross straight away and the digital one came ip with pregnant and 1-2 weeks which would be correct from conception.

I’ve had sore boobs, feel like I could sleep all the time and a bit of light cramping which comes and goes.

Is it likely that I am definitely pregnant? I’m panicking that I’m not but surely the HCG levels of 4 must have been 0 in order for me to ovulate.

Any help would be appreciated.