Excuses Needed


I'm currently 8w4d, and my mom is a hairdresser, she is insistent that I have to get my hair colored this weekend because I have too many grays. She does not know I'm pregnant, and I want to keep it that way till after 12 weeks. I have a history of past miscarriages and am so not comfortable getting my hair colored in the first trimester. She's the type of mom who doesn't take no for an answer and I'm having a hard time saying no without her getting suspicious. Any ideas for getting around this without causing suspicion?