Talk to Gynecologist on Gynaecologist

I’m 29 yrs old married one kid , want to conceive when my last periods finish we do IC especially on dates of ovulation i was having tender breasts and metallic taste and feeling fatigue but when my dates come i started having brown discharge then after 3 days my periods starts and i do test which was negative so my question is from dr what was the reasons i was having all symptoms but all ends with periods and during periods all symptoms disappear and my periods only lasts for 3 days other wise normal periods remain 5 days need dr guidance thanks