WHAT WILL I DO??? i"m deepLY stressed.. pregnancy scare

i'm 19 and i had sex with my boyfriend who is much younger than me, 16. we had sex last Jan. 10 and was repeated last jan. 14 of this year. i honestly didn't feel anything inside me, i mean, when he was about to release sperm he immediately goes out of me, but after it we will repeat it again for rounds. i'm afraid for i have been experiencing early pregnancy symptoms and honestly i'm not ready for this. i know its my bad. its our fault. i think i had implantation bleeding yesterday(jan. 20) and as much as i wanted to have an early pregnancy test, MR. google says it takes a week before i can get an accurate result after implantation or after i missed my period. i'm emotionally stressed, really :(( actually i'm not thinking of myself.. all i'm thinking about is my partner who is too much younger for this responsibility if i were really pregnant. i don't want this.. what can i do to stop the implantation? or should i test myself first before making too much conclusions that i'm pregnant? and if in case i'm pregnant... what medicine can i take to have abortion, by the way i reside here in the Philippines. my friends and my parents don't know this.. even my partner. i want to keep it as a secret so he won't be stressed that much and still continue his school without feeling much anxiety about this. I NEED HELP!!! please.. thank you so much