D-MER

Does anyone have experience with D-MER (dysmorphic milk ejection reflex)? I’ve been exclusively pumping since my son was born 3 months ago. Ive noticed that I tend to get really discouraged or angry (like EXTREME rage) right before I pump. It usually last only a few minutes but then I’m left feeling extremely guilty for snapping at my husband or my dogs or being angry at my son for crying. I don’t think it’s PPD because it only happens when I’m pumping or need to pump. The research I’ve done make me feel like it’s probably D-MER but it doesn’t seem like a ton of research has been done on it so I’m having difficulty finding a solution to the problem.