advice

so 3 months ago i was having sex for a while and i regret doing it because i knew i wasnt ready but yet i still did it anyway after the last day i had sex a couple weeks went by and i wasnt feeling well my period never came and i was just having a lot of pregnnacy synptoms and it just kept going the next month came and still no period my friends and family say im pregnant because of all the signs and i took a test and it did come out positive but im scared to believe it. Please any advice im 15 gonna be 16