Enema while pregnant

I’m 6 weeks & 2 days. I’ve been suffering from really bad constipation so far since I’ve been pregnant. I went to the ER last week for cramping on my side, turns out I was just super constipated. The doctor at the ER said I could use an enema. I didn’t ask my OB or anything & I didn’t use one until just awhile ago. I searched if Saline Fleet Enemas are okay to use in pregnancy & this popped up. I’m so scared now that it might cause a miscarriage. Has anyone used an enema in early pregnancy & everything turned out fine? 😓 also to add, I’ve taken miralax & colace whatever they’re called, stool softeners. NOTHING IS HELPING ME. The enema did help with relief.. but it’s the only thing that has so far.