I have been trying to get pregnant for the last two or three months no luck but last month I started on the 8th like im suppose to but I go to bath room alot an constipation as well lower stomach pain cravings breast been sore for only three days an the first of this month no sign of period till I go to bath room an dark bleeding for that moment an then spottin very light an nothin more I cry alot mood swings dizziness at times I took test last month bout two weeks ago neg so could I be pregnant? ???