was it the first time you ever had sex? cause if so, the very first time you;ll bleed some. But you don't get pregnancy symptoms the day after sex.
these are not consider as pregnancy symptoms.as ashie said you cant get pregnancy symptoms the very next day after sex. wait for your period date. when u had sex wat day it was? means if u have sex 11th to 15th day of period then chaces will more to get pregnant. 1st day will be count when you start your period.
and one more thing you r just 15 !!!!!!!!!!!! so do concentrate on ur studies. and atleast use condome!!.