no period..

it's been 64 days since my last period... at fist I thought I was pregnant but then I took tests and got a bfn, fast forward about 5 weeks later and I had some cramping that felt a little different then normal but I thought it's just cause I hadn't had my period at the normal time but a couple days went by and no af..? at this point my fiance just lost his job and we are exhausted waiting for af so we decided maybe it's time we stop trying, at least until we are in a better financial spot. it's about a week after that cramping and I'm exhausted.. utterly exhausted. I have heartburn so bad when I've never had heartburn, my nipples, not my whole breast, just the nipples are super sore and my skin is super itchy. I don't know what's going on but I have an idea floating around.. maybe af just decided to be late, but after awhile I eventually ovulated bc af wanted to show, but then maybe I actually got pregnant..? the cramping might have been implantation? I honestly have no clue about frame of all this but I still feel it's to early to test.. I took a test about 4 days ago and it was negative.. but maybe I'm pregnant? I don't know anymore tbh. thoughts?

update, I forgot to mention that I had spotting around the 10th of December till about the 14th. super light spotting. it was light brown and sometimes very light pink. it never got heavier, just stopped.