I have always considered myself "regular" with a 28-30 day cycle and a period that lasts 3-5 days. However, I never kept track of my period until October 2016 when I started using an App. October, November, and December 2016 were very regular.
My husband and I started TTC January 2017. my period has been really odd ever since then. I have been using OPKs.
January was only 26 days with an LH surge on day 13. During the fertile window, we tried on cycle days 10, 12, 13, and 14. I had 2 days of brown spotting on days 25 and 26, and my AF was 3 days. It was followed by another 3 days of light brown spotting (much lighter than pre-menstrual spotting). We were disappointed that we didn't conceive, but none of that seemed unusual.
February was 27 days with an LH surge on day 13. During the fertile window, we tried on cycle days 11, 13, 14. I had brown discharge/spotting, on days 26 and 27. The next day was medium flow, which was mixed brown/red, which I counted as day one of my next cycle. I only had one heavy period day on what I call "day 2" followed by another 2 days of light spotting. I was alarmed this cycle, because I really only felt like I had 1 legitimate bright red "flow" day.
March was only 25 days again with LH surge on day 13. During the fertile window, we tried on cycle days 8, 11, 13, 14. On day 24, by boobs were really sore (which never happens during my period) and I had brown discharge. I hoped SO badly that it was implantation bleeding. Day 25 had watery pink spotting. I put my tampon in day 25 evening, and it was soaked the next morning in a mix of brown and red blood.
I had cramping the following day (cycle day 1) and heavy flow. Cycle day 2 was medium. Cycle day 3, I initially thought was a "spotting" day. I did not have flow. My husband and I even were intimate. 2 hours later (after almost a 24 break in flow), I starting menstruating again but it only lasted 4 hours before I started spotting again!! I've never had a 24 break in bleeding before...it was strange. Seemed like the last little bit of period blood was pushed out.
Other background info: I'm a vegetarian and might possibly be B12 deficient (I've never checked). I also really like soy/tofu but have cut back to a couple of times a week (used to eat it every single day for years) since I heard it can mess with hormones because of the plant phytoestrogen. I have also had stress at work that could potentially be messing with my cycle.
My body has just been off since we've been TTC but no positive pregnanct test. I don't quite know what it means. Maybe it's completely normal and I'm overthinking it. Diagnosing myself on google is driving me crazy.