Thanks for the query to H.C.M. Forum.
As you mentioned that just three days passed ( late in period due date ) and you tested home pregnancy
This is very early stage , you must wait for next 4 days minimum ( 7-8 days delay in period).
However all these symptoms mentioned in your query indicates pregnancy.
2nd option is get in blood examination for hcg
for pregnancy and this will clearly find out the truth.