Am I pregnant or going mad? Please help!

[KTBee21]

I came off the pill in April and had my first 'natural period'in May. I have been regular ever since. Except this month. My period started 1st July and finished on the 5th. I think I ovulated around the 23rd July (had a change in discharge). I am now 10 days late. I've taken numerous pregnancy tests and they are all negative.
I have bloating, darkened nipples, cramping but dont know if I am pregnant or is this PMS?
Has anyone else had this or can give me any advice? Could I still be pregnant or am I out?

If you ovulated on 23rd July you can't be 10 days late! That's only giving you a 3 day luteal phase

You would only be due tomorrow give or take

That's when my discharge changed so I think I ovulated. Which is much later based off my previous periods.