So today I had terrible cramps, what I thought were period cramps.. I put a tampon in about 12pm cause I spotted a little bit of pink, took it out at like 5 pm cause I just had a feeling there wasn't anything.. All there was, was maybe a drop of brown blood. Not sure if I'm spotting from implantation bleeding or period. But since then I haven't had any more cramps or blood. Anyone else have this and was pregnant?