am i pregnant ??

right now im really scared ! im only 15 & yes i know im to young to be having sex 😭 i don’t really know if im pregnant buh i have researched information about early pregnancy symptoms & i have no idea at the moment ... im currently on birth control & i don’t think the pills are working because like i said i think im pregnant , the last time i had sex was January 16th & 22nd ( with the same person ) the last time i had my period was at the beginning of this month ( January 1st-6th ) and yesterday i noticed i was bleeding when i wiped after i used the bathroom the blood wasn’t dark it was light & it has continued on till today .... idk if im having my period again or if im spotting ( i don’t know what “spotting” blood looks like )... im really scared & i know my family is gonna be disappointed in me & they are gonna lose all respect for me ... i have experienced cramps , some back pain & ah few headaches buh i most likely had headaches because i haven’t been eating ... i have no idea what to do rn ... the only thing i can do is cry ..... my next period isn’t supposed to start till January 31st - 5th .... please someone give me advice on what to do