Be hopeful or forget it this month?

Hi ladies , I'm due on my period tomorrow according to the app, I do usually go over a few days. I took a test (one step - eBay cheapy) Saturday morning and it's showing as a BFN but now and again when I look at it I'm sure I fee something but I know it's just my eyes wanting to see it .. I took another this morning and again BFN would you ladies just say this isn't my month or be hopefully and keep testing and hope my AF doesn't show ? I'm not so much feeling alot of symptoms however I am very tired no motivation at all and not my whole boob but my nipples are very tender (sorry for TMI)... Xx