After miscarriage advice needed!

So I had a miscarriage at 5/6 weeks on 21st may, bleeding fully stopped 2nd june and had negative tests from 3rd june, symptoms all stopped within a few days of the miscarriage starting.

I had brown very light spotting 23-25 june, literally spots. As I was going on holiday 24 june, I didnt bother taking any tests as I thought my period was starting. But the spotting just stopped.

I then got some very random symptoms again while I was away, nausea, stomach cramps, insane heartburn and extreme tiredness. On my way home from the holiday yesterday I vomited in the car.

When I got up this morning I tested and stark negative and opk's were quite pale. The problem is I have no idea where I am in this cycle, it's been nearly 7 weeks since the miscarriage started and I am so confused what is going on!

Has anyone got any advice or experience? (Please ignore the ovulation window shown below, I used opk's the whole time and never got a positive, also had no fertile cm)