I have been sleep with my boyfriend with condom and after 3 day I started to got achy on my vagina and after 5 day I got some white vaginal discharge coming out, so what's a problem then ? Please advise !

You could be allergic to the latex in the condoms, and this has offset the balance inside. He can buy allergy free condoms. If there is no odour to the discharge it is not an infection.

Tick

But if changing condoms doesn't work you should consult an obgyne.. Because it may lead to bacteria and it can cause infection.