Can bith card really tell when not to get pregnant?

My husband was using the services of an astrologist for a while and he has guessed some of the events that later happened in our lives (or we just lived as per his guidance). Hovewer, it came to the point that he's now obsesivelly following whatever the astrologist tells, even to the extent that we plan our vacation dates accordingly

Anyhow, we have planned to start working on a baby this summer (after a long period of delay as we were focused to our careers and making everything rigth before we start). Few days ago (again) he had a session with the astrologist and he said to avoid getting pregnant this year (based on my birth details). He said that the stars/signs don't look right and to wait until 2018.

Now, my question is - is it really possible to see that my pregnancy can somehow be affected? Or that I might have a misscarigge? Or it just means that I won't get pregnant in 2017? I know that the logical answer would be "what's few months more to wait" but, on the other side, I've been waitting for so long to make everything right and to come to this stage. Few months more would be an agony to me.

Can anyone advice if the stars can really make such a negative influence?