I think your problem arises(pun intended) from being on the sector for 90 mins. I always find that complaining about the length of time one has been plugged in (somewhat inflated claim )gets one away before such problems manifest themselves.
Alternatively one could try wearing a vest with a Faraday cage incorporated in the garment at the nipple area. My underpants were modified in a similar way a while back and embarrassing bulges are now a thing of the past. Either that or I`m just not the excitable type.