Girls, please take a look urgently. The baby is preterm, corrected age…

Girls, please take a look urgently. The baby is preterm, corrected age 7 months. Has been pooping 3-5 times a day for a week now. Before that, stool was like in adults and once every 2-3 days. We gave him two drops of Tethema and vomiting occurred. Now when he breathes, it's straight heard there's fluid in his nose. And with an aspirator I can't suck it out. We have given him Anaferon before.