So DD1 was conceived while I was on my period - intercourse ~CD 4 or 5. I know sperm can live up to 5 days, so I could have O'd as late as CD 10. I remember it was a weird period, a little shorter than usual but definitely a period, although it did stop one day and then return for a last hurrah - which I supposed could have been ovulatory spotting.
DD2 was also conceived from intercourse very early in my cycle, probably the last day of my period or within two or three days - maybe day 5 or 7? This was definitely a period and not spotting. It had been approximately a month from my last period and heavy flow. Not a weird period.
But. My cycles are 30-33 days long. (A decade ago, they were 33-36 days long. IDK what changed.) With DD1 I got a + test a week before my period was due with no symptoms whatsoever - I took it on a hunch. With DD2, I waited to test until a few days after my period had been due.
What I'm wondering is.... could I just ovulate really early? We'd been having intercourse slightly later in my cycle for several months before I got pregnant with DD2. DD1 was a surprise baby. I have never had very abundant cervical mucus. I know that the fertile CM is supposed to be whenever you have the most for you, but I pretty much never have anything.
Still... unless both pregnancies were flukes.... that's a really long luteal phase, isn't it? I don't think I'm dedicated enough to temp (I tried to do it years and years ago.... was always confused but at one point I remember having what seemed like a 16 or 18 day LP, which I thought I must have been wrong about), so this is basically idle speculation. I'm planning to DTD while I'm finishing my period this next cycle just in case!