It’s not a spoiler. Just like the above commenter said, Carcel began to take contraceptives because he was afraid to get Ines pregnant while her health is unstable. It all began after Ines almost died from seeing the green pendant in the jewelry store. Since Carcel didn’t know why she almost died and Raul and Ines didn’t tell him the truth, he was looking for a doctor to diagnose the cause so that Ines can be properly treated. Carcel is deeply afraid that Ines will die giving birth to their child.

Can someone spoil for me why Carcel didn’t want children/why he took the contraceptive herbs?