Silphium was reputed to have birth controlling properties because its seeds were heart-shaped. I was talking about something a little more... reliable... such as, say, Premarin.

As to the survivability of such technology -- TFR explosions are a problem. birth control would be introduced to cut down overpopulation resultant from implementing immunological practices (vaccination and antibiotics.) The problems of modern fertility rate have far, far less to do with birth control and far more to do with the economics of raising children in a postindustrial environment. Even then, it turns out that TFR is showing a reversal of the declining trend in the last few years.

Overall I'd say there's pretty little to worry about. Especially since I'd have a good five decades of longevity to play with; I could pretty reliably introduce computing and electronics within that window, and that would be enough to ensure humanity develop AGI sometime in the next few centuries.