9/10 DPO post MMC in October

So to catch you up, last cycle was my first post MMC at 8/9weeks in October. Last cycle, I had faint positives for 5 days for a confirmed HCG blood level of 5 (I cannot). That was all on FRER. So this month, I’ve been careful not to get too excited, and I’m treating some vfl’s as if they’re old hcg, just in case. Anyways, tell me why today my Wondfo test is noticeably darker and with color. These things are crazy sensitive. I still have to work crazy hard to see a vvvvvfl on the FRER and I’m sure no one else will see it. Hopes aren’t up too high yet but the Wondfo has me like hmmmm.