Im 20 i have a two year old son me & my husband is working on a baby girl we had sex on (oct11)& my period came on during now its (nov11) & im spotting really light but cramping badly .....(nov12) im spotting light brown...*(nov13) it startd bleeding not as usually its jus blood no clotyting & i usually have a very bad bloody clotting period...yes we been trying & could i be pregnant