Those who are telling you that you can't cope probably didn't cope themselves.
They are hoping that you fail because that will make them feel better about whatever capitulations they made in their births.

That is their baggage they are trying to hand over to you - so don't take it on.

Just because others have been brainwashed into believing that women cannot birth without drugs (and up until the 20th century we all did, and very well thank you) does not mean you cannot break free from that.