I don't know if this fits you Max, nor would I offer a diagnosis in an anonymous forum or at a distance without a live consultation, but there is a simple phobia known as algophobia...an intense and extreme fear of either physical or emotional pain, often both. It's typically accompanied by panic and anxiety, and is often (but not always) associated with a traumatic event or events during childhood, and in concert with a genetic predisposition.
People with algophobia typically resort to extreme measures in order to avoid pain of any intensity. A sense of dread and intense fear accompanies even mild pain, and situations -- both those in which a reasonable risk for pain is present, and those that present no obvious risks of incurring pain -- are avoided. There are easily hundreds of everyday situations that a person with algophobia will attempt to avoid, situations that people who aren't algophobic perceive as having minimal risk or no risk at all for pain to occur. Operating machinery, lifting heavy objects, playing games or sports, house cleaning, driving, climbing stairs...
Symptoms associated with panic attacks -- shaking, sweating, dizziness, rapid heartbeat, shortness of breath -- are also common.
Make an appointment with your doctor.