I lost my virginity in november had. my. period. had sex in dec had period. but i have had milky white discharge 4 days now never had it this long?

Need examination: Vaginal fluid amount varies widely among entirely healthy women. However, every new or significantly changed discharge needs professional evaluation. It may be nothing, but better safe than sorry. Depending on the nature of your sexual relationship(s), no. of partners, partner with other partners, etc exam and testing for STDs is necessary.