Diabetic? Pulmonary Embolism?

Patient: Been through tests cant get answer.Headache ALLOT, Dizzy, numb feet, numb left hand, burning sensation in both feet, pain in right calve and thigh. Left foot gets cold sometimes right gets warm, Lethargic, over all feeling like i could drop dead any second.Could burnig in feet be from diabetic neurapathy?Is pain in leg a clot? It all scares the hell out of me but no insurance and scared to go get diagnosed by doc and get denied insurance in future due to pre-existing condition. Help please.