Opinions please, I’m so confused

My last period was Jan 29th-Feb 2nd and I’m showing as 10 days late.

I haven’t had many symptoms (my usual pms or pregnancy). Mostly just been dying from my allergies for 3 weeks. I’ve had white/ovulation like discharge for over two weeks now, had brown spotting during ovulation, my nipples are darker this past week and hurting A LOT, I’ve also noticed I can very faintly see a few blue veins near my nipples that I didn’t see 4 days ago.

However I took a cheapo Walmart test a few days ago (8 days late) and it was negative. Could my hcg be too low this far out?? If the spotting was implantation I would’ve conceived Feb 8-9th, if not then it could’ve been the Feb 18th.

I’m waiting to retest but I really just want af to come on if she’s coming, or let me get a positive so I can KNOW.