ugh I hate this!!!

Savannah
My period is four days late. She's not coming today. My cervix went from being middle-medium, closed and firm from being high soft and closed. I took a dollar tree test this morning and it was stark white negative. Don't really wanna keep spending money on tests. Do you ladies think I should take a FRER or just wait a few more days? My period was due the 8th. If I'm pregnant then I'd be 4 weeks 6 days as I'm on CD 34. My cycles are normally 29-30 days long.