BFP?!? Are the HCG bands supposed to get darker???

So my period was supposed to be on Saturday May 19th...but it didn’t. Took 2 pregnancy tests the morning of Tuesday May 22 (attached image). Period still hasn’t come & have had uterine cramping as well as mild on/off nausea. My test HCG bands haven’t gotten as dark as the control. Has anyone experienced this??? Is this real?!?