My sister is 6, almost 7, months pregnant

information from the headline is misleading. Of course you meant to share that she's between six to seven months pregnant, but upon first glance, most people read headlines very swiftly, deciding whether or not the topic is "catchy" enough or of interest to click on and scroll down to read further information about it, and, therefore, it might have seemed, when they first saw it, that when you said my sister is six, (followed by the little comma after the six) it appeared that you had a 6-yr old sister not that she was six months pregnant, (or more) but that it seemed that your 6 year-old sister was 7 months pregnant and I advise you to reconsider the benefit of rewording the title, by putting in the additional words of her being either 6 months pregnant and then offering it looked like she was 7 seven months pregnant for clarification in the rest of the message, in order to avoid confusion from the title, with how old (or young) your sister is!