Yesterday would have been 39 days since my last period and all tests are showing up negative. And yesterday I started having brownish red spotting. When I googled it they said it could be implantation bleeding so I thought I would wait a couple days and test again. Now today it is heavier and more red. Is it just my period? Or is that normal for implantation? I'm really worried because my husband and I are trying to get pregnant. I have been having lights cramps and am exhausted this week.