Gradual fiber increase matters twice on sema - slowed gastric transit exaggerates the bloating response, so what works normally is still too fast. Soluble over insoluble and a 3-4 week ramp is the safer path.
Constipation during a prolonged stressful period plus GLP-1 gastric slowing is a compounding effect - stress independently suppresses GI motility and the medication adds more slowdown on top. The Senna resolution is consistent with what a lot of people find; it's the strongest over-the-counter option for the GLP-1-specific constipation pattern.
the miralax plus magnesium citrate combination is the escalation step for when fiber and simple osmotic approaches aren't moving things - the citrate solution works faster and more aggressively than miralax alone and the electrolyte replacement in pedialyte matters because severe GI clearance pulls electrolytes too. it's the protocol people land on after everything else has failed to clear a real slowdown
Sema might've been masking whatever gut issues were going on since it slows down digestion. Would definitely recommend seeing a GI specialist to rule out something else happening underneath.