question about sex, can anyone inform me on this?

So i'm not new to sex, i'm in my mid 20's, have had sex here and there but not hundreds of times. Last night i had pretty drunk sex but i definitely used protection that's very important for me. I was fingering her and she was getting VERY wet and of course went to penetration, and it seemed to go on for 20-30minutes and towards the end she was pushing my penis out, i've felt that before after long sex but this pushing out was really intense, does this mean she was having multiple orgasms? i've heard that but wasn't sure, my ex said i gave her a lot of orgasms but since i was so drunk this time i honestly wasn't sure. Not trolling i really wanted to know what the intense pushing out meant that's all