Goodday dr we've been trying to get pregnant with no luck. but the strangest thing happened yesterday and left me confused. yesterday i had what seemed to be my period but its lighter then usual even today. my period is in 4days what's happening?

Infertility ?: A "light" bleeding episode prior to your period may indicate implantation (pregnancy) , so if your period is delayed for over a week, get a serum HCG test for pregnancy to be certain. If your period begins on time, ask your gyn physician for a hysterosalpingogram (HSG) which is a simple x-ray procedure to see if your tubes are open, the main cause for infertility (blocked tubes).