HELPPP!!!

I am currently 5 months pregnant and had a Seton placed 5 days ago.. I haven't had a bowel movement yet but I can feel it coming. I'm trying not to strain ( I usually do to have a BM ) the pain has been tolerable but I'm definitely scared to have a BM. I've been taking 2 stool softeners at night, increased my water intake and I'm trying to increase fiber. I also drank some miralax today but still nothing. I've been taking sitz baths 2x daily. I'm also taking Tylenol when needed but that really doesn't help. Any tips ??? Help me out because I'm ready to break down being pregnant and having this in my butt sucks :(