hi.. ive been wondering whats going on with me. 2 months ago im feeling so itchy with burning sensation and my discharge smells so bad, mu husband and i had intercourse on the 4th day of my period then after the cum smells really bad. its a fishy odor. and it happens last month when we had sex again on the 4th day. now been worrying about my dischARge, and this month im 3 days delayed and my cycle is 28 days. been thinking also if i am pregnant. please help me with the fishy odor discharge, im scared now. is this an std?, i hope not.please help