Pregnant or not!!?? Help a mumma out!!!

So i think i may have ovulated earlier than expected, if do i would be 3dpo, and i have a cold and just feeling down, i have the same 2 syptoms i had when i was pregnant with my daughter im so tired and also i cry at everything very unusual for me to cry, i started crying today because i decided to change my daughters name so she has my mothers name as her middle name and i started crying about it, because it has to be done by next week as im getting her a passport, then my dad just rang and said i cant come for dinner incase i give my little brother a cold im just an emotional wreck!!!? also i have had pos ovulation tests for 3 days straight! Could this be?