My cycles are usually normal. 7 days but this past one was only 4 days. My period is due again in 8 days but 2 days ago I had cramps and light brown discharge. Yesterday it was a mix but still light. But yet today my cramps are worse, more of a pinkish reddish brownish discharge. Could this be implantation for something else? I’ve never had implantation so I am completely confused