Confused with HPT first response analog

Pls help me girls. Am 27 and ttc #1 for almost an year now. I had fibroid and removed it last year. My af not welcome on 3rd of dec. my only signs I found this cycle is boils on face during tww, for couple of days had right lower back pain on n off. Watery discharge for four or five days and since this morning having worst head ache, feeling irritated, slightly abdominal cramps or leg pain which is causing me badly afraid if this is pms. I couldn't tolerate that feeling so just took a hpt (first response Analog one) when I saw the test in bright light I can see some second line which is not even slightest pink. I really don't know if am over seeing it n thinking it for vvvvfl or it's really a vvvfl. Coz I could capture it in some images and not in couple of them. Pls help me understand. If someone has a new unused analog first response can u check if before testing if u can see any lines by seeing the stick in bright light. Am I misinterpreting the default shade of second line thT wil be there for a vvvfl second line by overseeing it.