Rebonding my hair

Annabella
Hello to all moms here i just want to ask is it safe to do a rebonding of your hair  if u are in 2nd trimister of pregnancy. Cuz ill  be on vacation  in that time i well be 4 months preggy alreasy and i love to rebond my hair cuz its really quite  messy  my hair is anybody had try it?  How was it ? Is it safe pls share your experience and advice  to me thanks advance