Sex with a shorten cervics

Almost about a year ago I lost my first baby girl at twenty weeks due to me having a shorten cervics and not knowing it. I am now almost 21 weeks ( this Wednesday) and about a week ago I started taking pills and the shot of progesterone ( or something like that). One is daily the other is once a week. It seems to be working. I plan on asking my high risk ob if sex is safe for us again but wanted to know if any of you ladies who are going through the same thing what you thought?