Pregnancy or late period?

Hi girls, today is the 3rd day I miss my period. 2 days ago including yesterday I was constipated & had nausea on & off.

Today, I have a headache. I'm dizzy, back is hurting & my boobs hurt like crazy, they feel heavier & full!!!

The little black spots are when I was intimate..

Is there a possibility I'm pregnant?

I bought 2 test, I'm just not sure when to take them.

Any advice is helpful, thank you.