So my husband and I have been TTC for about a month now. The first day of my last period was May 10th. My next expected period is June 7th. Yesterday June 3rd I started getting cramps and my lower back started hurting. this happens when I get my period. My breasts have been so tender which is normal for my period but it's also very full. It looks gigantic!!! even my husband is asking "what is happening??" But I'm not expecting my period until June 7th.. I went to the washroom and when I wiped I saw light pink discharge. I waved it off as my period coming. But is it? can it be implantation bleeding? I did take a pregnancy test that morning (June 3rd) and it was a BFN. What do I do? is my cycle just switching? My period is like clockwork. It always comes on time.