My Husband Was Ill With Guillian Barre Syndrome Caused By

My husband was ill with guillian barre syndrome caused by vaccine. He was in the hospital for six days in December. He got better for a while seemed to peak then he had bad days and good days. Now he's gone through three bad weeks. Not getting better but worse. Very tired all the time. His NP is trying to get him into a special nuroligist office. While we are waiting he is getting worse. Not quickly like the first time. Some different symptoms. He is working. And he is walking. Yesterday he told me about a lump in his groin about the size of a walnut. He said it was bigger last week. Not painful. Is it all related?