When you say for the first time you mean your first time?
When i lost my virginity to my fiance. I bled everywhere, it was a crime scene (sorry for the image)
But it took about 7 days for my vagina to fully heal we tried to have sex the next day and the bleeding was worse, so just take it easy and let your vagina recover! Its pretty normal.
Yes the bleeding is normal if its first time of sex. Don't you worry you'll soon be fine I your stretch and relax your vaginal muscles once a while when it doesn't pain
It is very normal to bleed after sex for the first time as the hymen is broken. I cannot speak to how many days per say because each person is different.If the boyfriend was too large and/or the sex was rough, it could cause the pain you're describing and the prolonged bleeding. However, if the pain increases and the bleeding persists, you might want to look into some medical assistance. You could visit a clinic or gyno.
Peace and Love.