Pregnant ?

Pa

So I have pcos an me an my S/O have been trying for 7 months an iv had one miscarriage two months ago at 6 weeks well this month my period is all messed up I ovulated later then I thought I ovulated on the 15-16 I believe so therefore moved my period back an I’m not sure when I should get it but I have taken tests an they are all negative but I’m having spotting but it only last a hour iv have it 3 days now could this be implantation or period I’m debating on going to the dr iv been feels like sick the past few days but not actually getting sick if I am pregnant I would be 3w5d I believe as a rough estimate