Is it to soon? or when can i do it?

i just ovulated on the 3rd of this month when is the soonest i can test for pregnancy? both me and hubby is having signs of pregnancy hes having headaches and throwing up felings, me iam also having headaches moodiness, were both really tired all the time and sorrry fo info but iam alo having alot more discharge then usual and it makes me feel as if iam wet lol srry for the tmi but when can i test? the earliest i want to knw