Hii.. I Did Sex With My 16 Years Old Gf

Hii.. I did sex with my 16 years old gf bt unfortunately condom was snaggd while doing sex and i cummed in her vagina .. Bt i cleared quickly nd gave NOWILL pill with in 20mins ... Nd next days was her period date and now 2 days completed of pill .. She have some headache backpain and brown volour substance flowing from he vagina in small quantity...what should i do now .. Is there any prob .. Pls suggest me