My son is a month old but today he hasn’t been his usual self. He has got this on his face (see image) . He has been really sleepy today which is not his normal self and he only took 2oz at lunch when i formula fed him, I then breastfed him at 5:45pm, he didn’t seem to take too much but an hour later he was throwing up watery lumpy sick on three different occasions followed by two dirty nappies. I bathed him and he was looking to feed again so I gave him his normal formula bottle (I feed formula for lunch and just before bed) he only wanted 1oz and fell straight to sleep, he stirred for more a little later and he took only 1oz again and has gone straight back to sleep again. He isn’t running a temp though. What’s your opinion??