16 weeks and SO constipated 😫 Help!

Someone PLEASE help. I haven't had a BM in 6 days. I've tried everything. I naturally eat extremely healthy, take my prenatals (which is probably half the problem), and supplement with fiber gummies. I've tried drinking an entire glass jug of prune juice, stool softeners, increasing my fiber and water intake EVEN MORE. Trust me when I say that I get far more fiber, both soluble and insoluble, than the vast majority of pregnant women. I'm starting to get super worried. Called the on call OBGYN and she said I can do a suppository, but I was wondering if anyone has taken dulcolax while pregnant? The OB said it was okay, but I'm scared it will cause contractions since dulcolax targets smooth muscle. Does anyone have any experience with this? I have a history of constipation from my childhood, and it was since very much under control until now. I don't want to do anything that is going to harm baby, but I'm scared I'm going to end up in the hospital. Someone help!!