Thanks for writing to us.
I understand your concern.
Having unprotected penetrative sex definitely puts you at risk for pregnancy
, and you should never go in for unprotected intercourse
yes , the slight amount of bleeding you had is most certainly due to rupture of your hymen
as you mentioned that this is the first time you had vaginal intercourse.
Also, there are various pregnancy symptoms like nausea
, loss of appetite, breast tenderness, mood changes etc, but given your anxiety
, it does not make sense to rely on them.
Since you have missed your period by 3 days, I advice you to take a pregnancy test within a couple of days.