7DPO:( HELP ME

When should I retest?? I’m starting to get discouraged.. took a frer , I’m 6 days before my period so i was expecting a good result, I’ve just had the worst headaches and nausea... ugh! When should i retest? Thought I could see a vvvfl but then i realized I can’t:( i was just trying to hard, I know it’s still early. I have one test left and two cheapies.