help!

hey, im 15 going on 16. i recently had sex in august, i had received my period in september though. then all of a sudden my period stopped but i didnt have sex. in november i had sex but i still hadnt gotten my period either. its january and i dont know what to do. pregnancy test came out negative. i have a couple symptoms like my breasts hurting, fatigue, urination, mood swings, vaginal discharge (white/clear substance), basal temperatures. and yeah i really need help. dont judge :/, the guy is still with me and he was my one & only. we're close to a year and our families approve of us. and yeah.. i dont know what to do.

[flower216]

Go to a clinic best safe choice