Aiyoh, I had a cyst during my second pregnancy jugak, so I totally get the worry! The best thing is to let your OB know at your next checkup, they'll scan and monitor it properly, sometimes cysts do shrink on their own during pregnancy sebab hormone changes, but depends on the type and size mah. I'd say don't stress too much now, just make sure your doc knows so they can keep an eye on it throughout your pregnancy and advise you properly if anything needs to be done. A few of us mummy friends went through this and most were fine, but definitely get it checked rather than guessing, yeah?