Hi Kaz, sorry for your loss.
I have been counting the days since ERPC just so i know how long it is till my first AF, then, as Lea says, i would count the first day of AF as day 1.
Apparently women often dont ovulate after mc, im not sure if thats the case with ectopic though, i got this from ectopic.org but im sure you already know, but just in case:
When can I expect a period after my ectopic and will it be painful?
Your periods can take a while to re-establish and they can re-start anything between 2 and 10 weeks after surgery, or once hCG levels have fallen below about 100mIU/mL. It’s a waiting game really.
Most women find that their period arrives sometime around week 6 or 7 after surgery, and at some time in the 4 weeks after their hCG levels have fallen to 0 if treated with Methotrexate.
The first period may be more painful or less so than usual, heavier or lighter, last for longer or shorter than usual - there really is no set pattern. You should be able to manage the discomfort with over-the-counter pain relief and should not be soaking a pad in less than an hour. If this is not the case, you should seek medical attention. Your periods may be a little irregular or erratic but broadly speaking, doctors consider periods of between 23 to 42 days to be within normal parameters. If the first day of your last period was more than 42 days ago, make an appointment with your doctor to discuss the possible reasons for this.
Following surgery, we usually advise you wait for 2 of these cycles before trying to conceive again, to allow your body to heal and your emotions to surface and be dealt with. In the case of treatment with Methotrexate, we advise you to wait for at least 3 months after the last injection and if you had two injections some doctors suggest 6 months.
wishing you a speedy recovery x