With my periods I'm usually regular say I'm due on the 15th il come on either that day or a day before or after but this time I've come on 6 days early which isn't normal for me and my periods are always very heavy and painful but this time they isn't heavy or painful they are lighter then usual could that be a sign I'm pregnant considering I'm trying for a baby with my partner and have not been using contraception at all?

Charlotte welcome to AMHD.

While there is always a chance to become pregnant from sex whether you are using contraception or not. It seems unlikely that you are pregnant if you were bleeding.

You do not mention your age, as hormones flucutate with age, so this could play a part in your early period.

You must know too that stress and change in exercise or diet can cause this.

Bleeding is not a sign or pregnancy, unfortunately it is the opposite.

You say you are trying with your partner, not your husband. Please consider the ramifications of a baby if your partner is not in a committed relationship (marriage) and decides he wants out.

Just my two cents.