Is it just me or does this happen during pregnancy , I'm 18 weeks bout be 19 on Thursday ! I know…

Is it just me or does this happen during pregnancy , I'm 18 weeks bout be 19 on Thursday ! I know this May be TMI but I need to know if it's normal that your nipples have like little hard balls coming off and white stuff start showing !? I'm freaking out here lol 🙊