is it small??? or??? wth :( help lol

so everytime my bf and i try to have sex, the tip will go in as much as possible (he’s NOT circumcised) and once he lets go...it comes right out and touches my clit instead of going inside. how can we fix this problem? he’s not small for me because i’m very petite and he’s dick is quite thick....soo..how can i fix this? getting wet isn’t a problem, so if any help other than lube??? :((( it’s really frustrating ! we’ve barely been sexually active & we are 18... we’ve been together for 4 years and we were virgins before October 2017😅 so being each other’s firsts increases our sexual issues i guess :(

we’ve done missionary, ive been on top & doggy....all seem to just ...slip right out😭😭