My friend needs advice about her second pregnancy

Hello ladies! I have a friend who’s recently learned she’s pregnant. She has not been seen by a provider yet, so she has some concerns about what she’s going through. This is her second pregnancy, & it’s completely different from her first. She’s feeling a lot of nausea & can’t keep anything down. She’s feeling tender breasts &, as of today, cramping. Her main concern is that she’s also dealing with diarrhea no matter what she eats. She’s needing some advice & wondering if anyone else has gone through the same thing? Thanks in advance!