Hello! I am 26 and have always had irregular periods ever since I began menstruating at the age of 13. By irregular, I mean that I have never known when they would start. Often, they'd be 3-4 months apart. Doctors could not find any cysts (they found one but it resolved by the second ultrasound) and my thyroid levels have been normal. By a miracle, my husband and I became pregnant January 2011 and I gave birth to a beautiful baby girl October 2011. After her birth, I went on the progesterone only pill. I had spotting right away but my periods officially returned in April 2012. They occurred roughly every month until September, when I started getting them every 2 weeks. I wasn't breast feeding anymore by then so I went on normal birth control pills. However, we moved to Italy in November so when my pills ran out in December I could not get more and have been off them ever since. I had a period, then another two weeks later, and then I didn't have one for another 40 days.
This brings me to my question (sorry for the long history). My current period is the one I just mentioned, and it has been very strange. 2 or 3 weeks ago I was sure I was pregnant. My breasts felt like they did when I was nursing (the tingling sensation in the glands), I was tired and moody, etc. However, a preg test came out negative. Then, three days ago I had red blood in my panties and naturally thought my period was starting. However, then for two days after I had only brown discharge when wiping. Then red blood came in the morning but stopped that evening. It was back to light res or brown when wiping. Then 12 hours later the red started again. It is dying down again, now 12 hours later.
My question is: does this period sound strange enough that I should be seen by a doctor? Also, could there be any other reason for my lifelong irregular periods other than thyroid issues?