i cannot blindly advise you to self-prescribe an antibiotic based solely on the color of your mucous. mucous can be yellow simply from stagnation and congestion. it does not mean that you have a bacterial infection of some sort that would respond to amoxicillin. as you may know it is not possible to accurately diagnose you over the internet based solely on your brief posting. because you are concerned and have a history of open-heart surgery rather than treat yourself it would be prudent to be properly examined and diagnosed by a medical professional.
what symptoms are typical in a person who is getting rid of a cold but needs amoxicillin? i've had dark yellow mucous. i'm currently getting rid of a cold with a sore throat runny nose and now coughing with a bit of warmness in my body but with dark yellow mucous from my nose and now my throat when coughing. would it be advisable to take amoxicillin 500 mg for 7 days? i'm 24 and don't want to jeopardize my own immunity in any way but i don't want this infection to affect my lungs or potentially lead to my heart in which i've had an open heart surgery when i was very young (asd valve). thanks for your input.