Need to rant! Sorry it's long please read

Nichole
So me and mom got into an argument tonight. She keeps telling everyone about my pregnancy and I don't want people to know yet I told very few people I told her,my dad, mother in law, and my 2 very close aunts just in case I happened to have a miscarriage and these people would support me and be there for me no matter what. Every since I told my mom she has told so many people I can't even keep count now and I told her that I was pissed and she literally laughed and said my homonyms were getting the best of me while I'm crying because she hurt my feelings. I wanted to tell people how I wanted and she is ruining it all its supposed to be my happy time and she is stressing me the hell out telling me that I need to start telling people now! Because I'm almost 13 weeks but I think it should be my choice and she has kinda ruined it for me I don't wanna tell anyone now. Am I over reacting?