Welcome to HCM.
Your period was 8 days late and duration for 2 days. You get home pregnancy
test and blood test
So chance of pregnancy is very negligible.It may be confirmed by USG lower abdomen but your clinical presentation is not likely that.
You are suffering from PCOS,so there is chance of hormonal imbalance.As a result,period may be delayed or scanty period.It may be precipitated by over weight,thyroid dysfunction
, stress,psychological upset etc.
You have to check up these periodically with control of body weight and hypertension (as previous pregnancy with severe pre eclampsia
To avoid possible risk in next pregnancy,you plan for baby with advice your doctor and need follow up periodically.
Also do light exercise everyday,take healthy diet, avoid stress and sleep well.