Table 4:

Representative posts on body image and related subthemes

Major Theme: Body Image
Number of participants posting about theme: 22 women
Total numer of posts about theme: 75 posts
Sub-theme	Demographics	Gestational age at time of post	Weight data	Facebook Post
Positive Image (n=21)	23 yo, black / non-Hispanic, vocational	8 weeks	BMI 29.8, +42lbs, over	“cant hide it no more little baby getting me fat it’s going to be a long summer but it’s worth it #blessed”
		16 weeks		“it’s so cute how my belly is starting to poke out i swear im growing overnight but im still smaller then an average 5 month pregnant woman”
	22 yo, mixed race / non-Hispanic, high school graduate	19 weeks	BMI 19.2, +13lbs, under	“bellys are so cute in hoodies”
	23 yo, black / non-Hispanic, vocational	20 weeks	BMI 22.3, +37lbs, over	“i’m 130 lbs now idec if i stay fat after this baby i never want 2 be skinny like i was again i know that !! i’ve gained 17 lbs in 4 months ! i’ll be happy if i make it to 145 lbs by the end of this pregnancy . #teamthickagainplease”
	17 yo*	26 weeks	BMI 25.5, +17lbs, within	“actually convinced i’m in pretty good shape and will snap back quick asf”
	16 yo*	29 weeks	BMI 26.1, +14lbs, under	“idc what nobody say i’m beautiful asf”
Negative Image (n=29)	16 yo*	5 weeks	BMI 26.1, +14lbs, under	“she called me a fat hippo [name]”
	19 yo, mixed race / non-Hispanic, high school graduate	20 weeks	BMI 23.4, +39lbs, over	“my face getting chunky”
	22 yo, white / non-Hispanic, some high school	21 weeks	BMI 19.3, +35lbs, within	“i barely have any clothes that fit anymore thankful for the one flannel out of the 3 i have that still fits. #pregnantproblems”
	22 yo, white / non-Hispanic, high school graduate	22 weeks	BMI 24.5, +47lbs, over	“when your not even 6 months pregnant and someone ask you of your about to pop. fuckk im going to get huge”
	22 yo, mixed race / non-Hispanic, high school graduate	33 weeks	BMI 19.2, +13lbs, under	“my boobs get in the way as much as my stomach does i want my little titts back”
	20 yo, mixed race / Hispanic, high school graduate	35 weeks	BMI 20.1, +26lbs, within	“only cause i look humongous!!! 8 months down, hurry up fat man!!!”
Neutral Image (n=32)	22 yo, white / non-Hispanic, some high school	7 weeks	BMI 19.3, +35lbs, within	“call me crazy but i can already see a difference in my stomach. if anyone really knows me, they would know i’ve always had a very flat tummy. i will constantly take pictures of my stomach to see the difference. #7weeks2days our little baby is growing.”
	19 yo, black / non-Hispanic, high school graduate	14 weeks	BMI 22.2, +45lbs, over	“idk why my stomach look that big on that picture it’s not big at all y’all”
	19 yo, white / non-Hispanic, some high school	17 weeks	BMI 20.4, +35lbs, within	“it feels so good to finally feel comfortable in my surroundings lol that baby bump got me feeling fat”
	24 yo, black / non-Hispanic, high school graduate	17 weeks	BMI 22.6, +30.5lbs, within	“my stomach is starting to shape and get bigger lol and a lil heavy”
Legend: * = demographics not completed by participant + / − = positive / negative weight gain during pregnancy
Order of listed data: Demographics header = Age (years), race / ethnicity, highest education level obtained Weight data header = Pre-pregnancy body mass index (BMI), weight gain during pregnancy, Institute of Medicine (IOM) classifcation of weight gain at the end of pregnancyR
Common social media abbreviations: lol = “laughing out loud” | idec = “I don’t even care” | idc = “I don’t care” | idk = “I don’t know” | asf = “as fuck”