Had threesome with boyfriend and friend now my discharge is different.. is it normal for discharge to change due to change in sexual activity?

Get checked.: If you have an abnormal discharge especially if having sex with multiple partners first you should get a pregnancy test and also a formal vaginal exam in order to check for possible infections. Make sure you see a GYN provider as soon as you can.

Protection?: More sexual secretions with multiple sexual partners at the the same time. Was intercourse protected with condoms? Was "friend" M?F?. Do you know your sexual partners' sexual /STD history? You are male? Was this a purely homosexual encounter? Please protect yourself at all times.