So I was a week late on period with a very faint positive got spotting two days later that picked up…

So I was a week late on period with a very faint positive got spotting two days later that picked up some and lasted only three days ... went to ob doc and she said it was negative and to re test in two weeks to be for sure ... I'm so cunfused ... I've been feeling horrible past few days ... anybody else go threw this ?