“If what I say resonates with you, it is merely because we are both branches on the same tree." ~W.B. Yeats
I am not sure what your lump is but you have received some great advice. I would suggest that you follow Nanner's suggestion to be seen at an Urgent Care Clinic.
Urgent Care offers convenient walk-in medical clinics with providers who are available during specific hours to treat any non-life-threatening illness or injury that needs immediate attention.
I hope you have this service available in your area. It will allow you to get your medical screening exam and you will not have to wait for a clinic appointment. :)