Me and my SO have been trying for the past month, my period isn't due till 28Jan when should I test?…

Me and my SO have been trying for the past month, my period isn't due till 28Jan when should I test? I took one and it was negative, I've been tracking my ovulation so I know all the days we've had sex were the right days.

When should I test? Last time I didn't take a urine test, just got blood work.

Crossing my fingers, my first was so easy to conceive we didn't even know I was pregnant for a while. Only took one time to get pregnant last time😅