how do i know my vagina is aroused enough for penetration? /u/Outrageous-Carry1521 Sex

my bf (22M) and i (19F) are planning to have sex for the first time next week. im quite small physically for my age (1.55m and 46kg) and hes obviously taller and bigger including his dick. ive notice that when it comes to my vagina, putting in 1 finger is uncomfortable/hard work even if ive just orgasmed (mini question but im wondering if this is normal too? is it cus im just not turned on enough?). im wondering how, during our first time, id be able to tell when my vagina is turned on/relaxed enough for him to go in? i dont know how painful its supposed to get for a first time, its kinda scaring me bcs i dont want to hurt too much 😭 he reassured me that we’ll be doing a lot of foreplay etc but im still worried i wont be able to tell when im physically rdy for penetration. im sorry if this has been asked before but i didnt find a reddit post with this specific question

my bf (22M) and i (19F) are planning to have sex for the first time next week. im quite small physically for my age (1.55m and 46kg) and hes obviously taller and bigger including his dick. ive notice that when it comes to my vagina, putting in 1 finger is uncomfortable/hard work even if ive just orgasmed (mini question but im wondering if this is normal too? is it cus im just not turned on enough?). im wondering how, during our first time, id be able to tell when my vagina is turned on/relaxed enough for him to go in? i dont know how painful its supposed to get for a first time, its kinda scaring me bcs i dont want to hurt too much 😭 he reassured me that we’ll be doing a lot of foreplay etc but im still worried i wont be able to tell when im physically rdy for penetration. im sorry if this has been asked before but i didnt find a reddit post with this specific question