*sigh*
So this morning I thought I'd test again just to confirm those lines and make sure I wasn't seeing false pos. The cheapie has nuthin'. Nada. Yesterday there was a line. I'm cramping, have brown cm/discharge, and feel like AF is coming. Pretty sure it's a chemical. So I'm going to wait it out a few days and test again if I miss AF. If there's still lines, I'll call the dr and have bloods done but it's not looking good.
What's weird though is that while the cheapie has nothing, the midstream cheapie has a nice thick pink visible line and I had a crystal clear bfn on Friday with that brand.
Edit: Also retested (from the same fmu sample) with a second $ cheapie. The second one has a darker line than the first but not as dark as yesterday. BUT yesterday, I had checked the test at 3-4 min and it was bfn so I put it down and didn't check again until about 15 min later. Then it had lines. So today's line might be the more accurate one??

Gotta love being in PARL limbo...

Anyway, gonna wait to call the dr. The weather is super icky out there atm (snow, LOTSA wind, cold) and with things looking more like chemical than viable, I'd rather just wait it out a few days.