My boyfriend is having chest pain, difficulty breathing, swollen legs and feet, back pain, headache, upset stomach... Eyes won't stop watering, tired and cold

I hope you. Took him to the er by now....
Chest. Chest pain, with shortness of breath and edema (swollen legs) are very worrisome. He is at risk for having cardiac issues like a hear attack or heart failure. By the date of this post about a week has passed. Did he see a doctor? Did his symptoms resolve? In a situation like this it is very important to seek urgent medical evaluation. The sooner the evaluation and treatment the better the outcome (concerning cardiac issues). I hope he is better.