Abnormal Periods since TTC

Shauna
I have been TTC for baby #2 for a couple months now. Before TTC my periods were like clockwork and would last 4 days, no spotting before at all. Ever since TTC they have been all wacky. For 2 months in a row I started spotting for about 2-3 days both times, so I thought it was implantation bleeding, then it would stop for 2 days and then bam there was my period, so heavy and lasting so long. My last AF lasted 11 days! I am just curious if this has ever happened to anyone else? If there is a reason for it or if im just stressing too much? I have been charting my BBT and CM and now for this month I'm all confused and screwed up because my AF lasted so long, I don't know my timing on anything lol.