Hello, Thanks for the query.
Your symptoms are suggestive of pregnancy
but are not definitive of pregnancy.
So i recommend you to get a blood beta HCG
Followed by transvaginal ultrasonography
to be more sure.
Since you have milky discharge from nipple, i advise you to get a serum prolactin
level. Prolactinoma usually presents with milky discharge from nipple.
Hope this helps.