By Jasmine Allday Billy Mitchell will be left reeling next week on EastEnders \- after a family member arrives. The Mitchells, particularly Billy, have been rocked recently by the return of Nadine. She came back to tell Jay that she was pregnant with his child, leaving him stunned and unable to cope. Next week, Billy gets the shock of his life as a character returns in his storyline. Next week on the BBC soap, Nadine decides she needs to arrange peace drinks at the Queen Vic as she’s desperate to get the family on side. Whilst there, Billy presents Honey with a new engagement ring and their mo…