BBT dropped a couple of days ago but still no period and BFN

[Anonymous]

What could this mean. My period is now 4 days late (I'm very regular) but still no period or BFP. I'm thinking I should go to the Dr. and have my beta and progesterone measured. Could this be a chemical pregnancy?

This happened to me last year and while the beta eventually showed up it did not go up at a good rate and started going down after a couple of weeks.

Has anyone gone on progesterone supplements with something like this and had a good outcome?