7 Days before AF 🖐🏻

My AF is Due on the 27th, Iv had a dot of blood with loads of EWCM on the 17th and had brown discharge when I wiped 2-3days before that, on the 17th I had the worste lower stomach cramps Iv ever had, slight back pain and Iv felt as if I'm going to start AF at any moment, Iv got slight on/off sore boobs but not major, We've been TTC for 16months now with constant disappointment and absolutely no luck, I actually gave up to be honest, sick of been down so I don't even know when I ovulated this month 😁😩 has anyone had a positive 7 days before AF? Or would I be setting myself up for disappointment 😬 ushally when I feel like this AF arrive super heavy so I'm soooo shocked she hasn't shown her ugly face, what are you all thinking? Help???? 😩