What Causes Spotting Before A Period Along With Sore Breasts?

Confused, pregnant or something wrong?
Im a 20yo female trying to have a baby. Tryed about 2 weeks ago and Ive had really sore brests to the point where they cant be touched at all, they have grown and gotten alot firmer, i have little dots around my nipple that stand out alot more. My brests also feel very heavy. I started spotting a light pink colour 5 days before my period was due and started bleeding heavier & more normal 2 days before my period was even due. Im really tired aswell. Having really sore brests is unusal for me and so is spotting before my period. Is there any chance im preg or is there something wrong?