LO crying nonstop when away from mummy

Hi mummies, Anyone encounter similar situation? LO is 6.5 months old and somehow this past week has been super clingy to me. If anyone other than myself carries her, she will cry uncontrollably. Is it separation anxiety? She had her immunisation jab last week too and had a fever for 1 day. Appreciate if any mummy can share similar experience of what you did to alleviate this. I worry she’d lose her voice from crying too much. Thank you in advance!