2025 Pfizer more potent?

Has anyone experienced first or more side effects from this years vaccine? Just received my 12th Pfizer vaccine and I’ve never had anything other than a sore arm from the 11 others. My husband is also experiencing side effects mostly extreme fatigue. We mask everywhere and both work from home and rarely leave the house so I have no doubt that it’s from the vaccine. Edit to add: I have multiple autoimmune disease but my husband does not. Thank you all for being here🩷