ttc! HOW LONG SHOULD I WAIT TO TEST ??

Alexandria

so im 5 dpo && ive been feeling nausea in the morning my back hurts and my boobs are starting to hurt... i have cramping , but when i took a test last month after being 5 days late it came out negative, havent tested since then. Im kind of scared to do so. my son has been a little pain in the butt glued to my hip. is this it ? could it be? i hope so . how long should i wait to test ????