Bra for fluctuating breasts?

Lorrie
Hi there! Is there such thing as a bra that accommodates fluctuating breast size during pregnancy? I'm only 8w5d and all of my bras hurt like crazy. Do you think sports bras are best? I just wouldn't know what size to buy and am worried I'll need to buy several sizes. I'm very petite and am normally a 32DD so I'm just not sure what direction I should go. Also worried about spending a lot this early in 1st tri. Thank you!