i was on depo injection and have been off since feb of 2009 ive had regular cycles now for the past few months and in november of 2009 i had no cycle but the first week of dec 2009 had very very light spotting for three days since then ive had no cycle im trying to get pregnant could i be? i took a hcg test in nov and it was neg but i havent taken another in dec pleez help