See anything?

So I had been feeling super tired and sick lately. I took this two weeks before my period was due and got this so i decided to wait to see if I got my period. Curiosity killed the cat so I took a digital and got a “Not Pregnant. Well I eventually got my period but it was over a week late. I’m still feeling super tired and going to bed by 8 and I have a lot of back pain. HELP.