Very likely the baby won't get it. I caught a flu from my 4-years-old when my second one was 8 days old. I had a ruuning nose and a bad cough for 2 weeks. But the baby was fine. I was breastfeeding all the time. But you do need keep an eye on baby's tempreture sine at this age she/he maybe sick without a running nose or cough. I will suggest you keep breastfeeding but wear a mask, wash hand and change your clothes whenever you handle the baby. 红色的小粒粒 I think it is baby acne, it will disappear in a coulpe of weeks, just don't apply anything on it.