Hi and welcome to the site. My name is***** hope I'm able to provide some helpful medical information for you today.
Hi sorry for the delay. Sometimes the right expert is not on-line.
With negative pregnancy tests, the period skips are not from a pregnancy. Pregnancy tests are VERY accurate. Sometimes on-line you will read about women being pregnant with negative tests but this is not what is going on here.
Your doctor should also check for thyroid disease and elevations in prolactin hormone. Both of those can cause skips. But at age 46, with "perimenopausal" blood tests, it's quite possible the skip is from lack of egg release.
Three days is too soon to tell if the progesterone worked or not. Usually I tell women to expect bleeding within 7 days of finishing. If there is still no bleed, most likely there isn't enough estrogen
. This can be from being perimneopausal, being thin, eating disorders or excessive exercise. There are a few other rarer conditions that can cause this.
But in this case pregnancy? no.
I hope this was helpful and reassuring. Please reply if I can clarify anything.