5th house lord Mars, star lord Saturn and sub-lord Venus have the combination for child-birth along with anti combination as well. Mars and Saturn being retrograde along with Ketu’s position in 5th-house in Chalit are making natural conception difficult.
Sun-Moon period from 26/2/2018 to 28/8/2018 seems OK for trying and efforts will pay-off with medical help. Otherwise, Sun-Rahu & Sun Jupiter period from 2019-2020 show good chances of success as well.
God Bless,
Astro Jyoti