Am I overreacting?

This morning I wrote down a to do list for my day. I placed it on the front table in the living room not thinking anything of it. This evening my mom picked it up, read it and came into my room loudly questioning me about why did I have ‘get a pregnancy test’ on my to do list, saying you sure have been sleeping a lot again etc. (I am letting my mom and step dad stay with me for awhile until they are able to get their own place.) I became upset and told her to give me my list and that it was none of her business what I had on there. Then I stated this is why I didn’t want you all to live with me because I have no privacy. Just a few months ago, she questioned me about having a dildo in my closet, and this was in front of my sister when she said this. I am 27 years old and a very private person, I like to keep my sex life to myself. I’m growing very tired of her asking about am I having sex and I etc. Did I overreact in today’s situation? Or is my mom crossing the line?