Hii My Period Was On 15 N I Hd Sex

hii my period was on 15 n I hd sex protected sex on 21 n tuk I pill within ,15 hoirs . starting days there was pain n often urine Bt lasted fr last two days Bt its been two week Bt Tday I Hd spotting little heavy . what it means tl . I m Rlly worried plzzz tl me dr