Help me !

Lauren

I tested yesterday at 7 or 8 DPO and got a super faint positive. Tested this morning and got a negative with different types of tests. I am still nauseous, exhausted, and feel like crap. Af due in 6 days. When should I re test and has this happened to anyone else where you got a super faint positive on frer and then a negative with digital and one step from DG the following day??