Hiatus Hernia and breast reconstruction?

I'm having a preventative bilateral mastectomy with immediate implants on the 13th Feb . I'm having implants placed under the muscle with a tissue matrix sling to support the implant A question I forgot to ask was whether my reconstruction will be affected by the fact I have an Hiatus Hernia . It gives me next to no problems and I know it's very common but I have this fear they will cut in to my chest and it will be there angry and protruding and cause problems for me . Am I being unrealistic?