Hi,
Welcome to Healthcaremagic.com.
I had gone through your question I can understand your concern about your prominent blood vessels on your breast.
As per your history, it is after the removal of bra. That means if it fades after removing the bra, it can be because of wrong size (tight bra), that is blocking blood vessels and making it prominent.
Other cause related are obesity, post exercise, even
pregnancy it doesn't need any treatment and this is physiological condition.
But in case you feel any lump,
depression or ulcer(wound) on your breast you need to visit a Gynecologist for proper diagnosis.
To make yourself
stress free visit a Gynecologist and get a
mammogram done.
Hope my answer will help you and you can write to us further if you feel any need.
Regards
Dr Muzaffer Hussain Parray.