Short cervix

Keep hope was diagnosed at 18 weeks by vaginal ultrasound my cervix was short 0.95 and it was too short for cerclage with funneling there was nothing they could do but dr immediately put me on progesterone every night vaginally it's so messy but it's working didn't have this problem before with my other son and cervix was normal this pregnancy then at 18 weeks it just disappeared but hey currently 36 weeks