Was planning on babies, not anymore

So my fiancé and i were planning on having a baby in a few months. Due to anxiety and my not being able to sleep because it’s gotten so bad I have anxiety attacks in my sleep. I’ll be going on anxiety meds and they said due to that we should put off having children til my serotonin levels are back to normal. Has anyone who’s had anxiety had this struggle while pregnant or trying to conceive?