What Causes Pulsing Sensation At The Epidural Site Post Delivery?

I got an epidural for pain relief when i delivered my daughter 6 months ago and about 1 month ago i feel a pulsing sensation at the site and a almost unnoticeable bump. I experience a weird dull aches in both my legs and i have had headaches at the center of my head for 10 days. it feels as if my spine is aligned at that spot and due to breastfeeding i can only do tylendol which only calms the headaches. My last physician wanted to give me an xray (radiation) i requested an mri instead but she refused to help me. My health insurance is lackluster so i decided to self treat. I dont want the radiation to harm my breastmilk. The doctors they sent me to had nurses stating mri has radiation and more than xrays. I know better than that...Can someone help. I live in south florida any recommendations on who can help me.