Sharon, it's difficult to monitor during bed time., as he is going to sleep soon.. U might want to see if vomit Again or unsettled... If u feel that something is not usual, u might want to bring him to kk a and e.
Cos u might not be able to find any pd this timing. That time my gal fell off the bed she was bleeding on the mouth and cos early in the morning like 6 am... No choice brought her to kk.