"no" means "no", but so does:
"i'm uncomfortable"
"maybe another time"
"i don't want to"
"this doesn't feel right"
"i don't feel like it"
"this feels wrong"
"i'd rather do _____"
"maybe we should wait"
"i'm unsure"
"i don't want to do this anymore"
"i don't think so"
"i want to leave"
"not right now"
"stop"
if it's not a solid yes, it's a no. some people don't know how to say no. you should just be a decent enough person to know if they're uncomfortable. consent is important.
and on top of that, "no" is not an invitation to persuade them to say "yes". consent is non negotiable.
hey this gained a little traction haha, if you're going through anything and need to talk my dms are always open! i'm glad i could help some people out :)
one more thing before i go, my friend has a gofundme to raise money for his top surgery, if you could give or just spread the link anything is appreciated :) http://gf.me/u/x99bq3