well my period came almost 2 weeks late and so went and got an at home test it came up negative then i got my period and it was really messed up it was gone in a day then it came back two days later but long enough for me to use a pad and it stoped four other times in the week. and now my boobs hurt not really bad but enough. and it hurts to lay on my belly and if i brush my tough in the morning i feel really sick. i have been wakening up really dizzy and have had bad headaches all day at work. and i feel sick to my abdomen. all the time. could i be pregnant or could it be something else?