Before marriage, my hubby and I went for a full body check to make sure we are healthy. In case anything needs correction or improvement, we have time to work on them.
(Before body check, top up whatever insurance you need to. Otherwise, it'd be tough in case any imperfection is found. Hardly anyone is perfect.)
You'd need to have Rubella immunity.
If blood type ends with "positive" while hubby's ends with "negative", need Dr's advice on pregnancy issues. Apparently, first born would be fine but not second born.
Before conceiving and during first trimester, most gynaes advise taking folic acid.
Healthy diet, no smoking, no alcohol, limited caffeine. Relax and enjoy making your baby.