40+1 with sickness

Hi ladies wondering if you could help! I'm currently 40+1 and I can't stop being sick! I've been up all night hugging the toilet and now my stomach is cramping and in agony when I'm sick it's like I've nothing left to throw up! Will this harm my baby? People keep saying it's my body getting ready but I never had this with my previous pregnancies, and I think I've caught a bug from my other child who was constantly being sick yesterday x