Hello, Sorry, forgot to mention ages of baby births: 37,38, 41 (hopefully) 43.
OPKs are great, I used them to get pregnant quickly in a few cycles. They are misleading and I worry ladies will wait until a + opk before doing the deed.
I never timed intercourse for day of ovulation, always aimed for the day before. I believe there is a lot of literature warning that after a positive opk, it is too late to conceive. I stand to be corrected, but I also have three children based on this method! lol!
I have even gotten pregnant after 40 with a single try. Basically, we are very old and exhausted with lots of little kids, so every night or four nights of sex a month never happened for us. In fact, our first three were conceived by having sex only four times in four years. Did I mention we are exhausted?
My tips across my four geriatric pregnancies: use fertility friend, become obsessed with mucous, use opk to determine when to do it next month, aim for day before poitive opk, have an orgasm yourself after sex and don't move for half an hour. I also don't drink much, stayed away from the pill for a decade before (condoms, timing) and charted for my last, in addition to opk.
Actually, I used cheap strips, then smiley face to confirm. But once I got the smiley face, I knew the ship (for me) had sailed. So you have to use ovulation predictor kits to learn about next month, if that makes sense. I also don't panic about scant mucous, short luteal (10 days) or how old I am.
Finally, there has been some studies stating that light from devices can disrupt circadian rhythm AND FERTILITY. So don't use your phone or iPad at night, seriously! lol!
Finally, remember that historically the AVERAGE age of final birth for women was 42, meaning half stopped earlier, but a full half had them later.
A great book is the inpatient woman 's guide to getting pregnant, by I think jean twenge? I have it and it was good.