Back Pain & Prenatal Massage

I'm 19 weeks and have a commute to work. Progressively, my back is hurting after longer car rides. I ordered a cushion for my seat and have been stretching my back - but I was hoping to get a prenatal massage this weekend. I am having trouble lying on my stomach and was wondering if there were special massage tables with the abdominal area cut out for pregnant women?! Also, to any massage therapists out there...I have pretty terrible hormonal back acne; are you guys super grossed out by that?