helppppp

I have been taking prenatal vitamins & folic acid for almost a month now.... I am going on 8 days sense my highest (33%) ovulation day.... I have had cramps on and off for a few days my boobs are extreamly sore, and it looks like my veins are kinda popping out a little around my nipples & areolas.... I took a test today in the middle of the day (I know it's best in the morning but I'm impatient lol) but it was negative... so when do you ladies thing if I should take a test?