Sleeping bra?

So I'm in my first trimester and man to my girls hurt, the skin is sore since its stretching and the nipples are crazy sensitive. My husband and I sleep in the nude (though that may change once this baby gets to an age). Problem is my boobs hurt especially at night and just drawing a sheet over them or rolling to my side is painful. Comedy moment last night. I tried a sports bra I had prior to being pregnant (supposed to fit a 34D) and it squeezed the ladies so bad I had to switch to just a tank top. Any recommendations on bra brands to try? How much larger should I go for now? How often will I need to change size?
Sorry for all the questions. My mother is estranged and I don't really have anyone to ask.