It looks like fungal infection due to sweat & heat.Consult dermatologist if it's increasing .Don't worry get such things on skin as skin is very delicate now .Due to non cotton clothes , oil reaction can happen .If it's difficult to consult personally doctor do as above suggested or show this pic at any pharmacy or medical shop & get medicine prescribed

Hi apply rash free ointment on the rashes and keep the area diaper free for few hours in a day and keep the area dry and clean as possible

Hi it can be due to colic pain usually, give small feed frequently and hold baby vertically after every feed and position properly to the breast so as to avoid air ingestion while feeding which is the most imp cause of colic pain and gases and fuzziness

Crying in night is common in newborns till almost 3 months. If it's continuous & too loud it will b colic pain .Mostly such crying starts by evening everyday or late night.Consult Peaditrician if crying is not getting controlled by carrying or feeding baby.

It might be due to calcium deficiency... once consult dr.

Hi you can clean with cotton cloth dipped in luke warm water

Mamaeearth daily moisturiser lotion. It contains Shea butter, cocoa butter, jojoba oil nd aloe vera . These all r meant for providing nourishment nd glow to dull and dry skin specially in winters. This is Asia's first nature certified brand. Really amazing products Do try.

Hi it seems to be due to sweating fungal infection, will improve gradually, just maintain good immunity, and keep the area dry and clean as possible

Shafa in which question I told??

If it's in the other question means if weight wise is good means this joints one show to your Dr and clear your doubts,they can help you...

Consult ENT as it's smelly & may b itching also for baby that's y ear pulling .Sometimes during teething also babies pull ear