OK so I used to chart to prevent pregnancy. Now that I'm ttc nothing is working right.. First got my period 2 days early. First day normal. Then after that I get blood for a few hours then back to heavy snot like gross cm for a few hours, then back to a very light no pad need flow... I'm started to get worried that I have some sort of hormonal imbalance. Has this happened to anyone else? What was the cause?