Fear and anxiety over physical illness?

Hi! I'm bipolar 2 with pending ADHD tests. I always seem to get very anxious and fearful whenever I catch flu/pneumonia or any of my medical conditions like asthma or stomach problems worsen. It's this sort of existential dread, the thought that something is wrong and I lost control over my body. The reality starts to feel fake and distorted, full of unknown threats... I wonder if this is caused by the bipolar disorder. Does anyone else have a similar experience?