Have you contacted LVO or CIC about that? if not do so ASAP. When you took your re-med did IMO do x-ray? I suspect not, since you are pregnant no matter of how old the pregnancy was at that time they hold the x-ray test until your delivery and after couple of months they will call you for x-ray.
What I assume is due to LVO's and IVO's negligence (since super intelligent people are working there), they did a big technical mistake that first they did DM and PPR and then re-med, which were to be done other way around. Once they realized their mistake they have hold the visa for now. You better had contacted LVO for extension of medical when they asked for re-med. Anyways, now contact LVO ASAP either they will extend your first medical, or will ask you to complete your re-med i.e. x-ray after the delivery.
One more thing, in any of the circumstances I see you flying after your delivery as airlines may put objections on your pregnancy. However, do some sadka and lot of prayers as they can change the fate. My prayers are with you.
