I was in the same situation, I don't know if you are male or female. I had a medical reason for needing to postpone pregnancy. My former husband was not on board with abstaining, so we just had a normal married life. I conceived twice and unfortunately miscarried both times.
One time the dr had prescribed medication for dysmenorrhea , he picked up from the pharmacy at his work work, when I saw it was birth control pills, I refused to take it, he was upset because he spent the co-pay on it, it was one of the few times I outright disobeyed him. The other was when he refused to take our son to the ER room when he was having difficulty breathing, so I called a taxi.
I wasn't Catholic at the time but fortunately had learned that contraception was a sin and how birth control pills causes abortions. As much as I disagree with the Kippley's attitdue towards "planning" children and having an obligation at times to use NFP, their work did give me some confidence to say no to healthcare providers.
It was a difficult position to be in, with a husband that had little regard for my well being, while trying to tell the healthcare providers I wouldn't use artificial contraception. I remember once the dr called him back into his office, and he explained to him that we should wait to get pregnant again. I was actually already pregnant at the time but didn't know it, and my former husband said He thought it was something important. I was so humiliated, I made a comment on a frame the dr had on display.
Another time after I had already been treated for injuries I had taken out a protective order (we had reconciled after that) I was pregnant and needed a referral to a high risk obstetrician. The nurse practioner was pressuring me so much to have an abortion, she was refusing to give me a referral. It's hard psychologically to stand up to someone especially an authority figure like a healthcare provider. At the end she was So like what are we going to do, I was so upset from her pressure I could hardly speak becuase I was ready to start crying but I said We are going to have a baby. It's really hard, and you can have no support from anywhere.
If I was a man though and my wife was on birth control pills I would completely abstain because that could be murder.