Yes it is still possible. He doesn't need to ejaculate for you to become pregnant. His pre-semen (which all men get before ejaculation) can be released during sexual activity.
What are you wishing for the outcome to be?
Id suggest that - if pregnancy is something you really don't want - you should always use contraception no matter how "spare of the moment" it is.
If you're concerned, it's best to wait it out to see if your period is late. You can infact get an early pregnancy test to use on the day you're late if you're really concerned but it's not always effective.
Him withdrawing before he ejaculates ('cums') isn't a reliable method as the above posters have mentioned, he will release something called pre-ejaculate which DOES contain sperm and therefore if one of these meet an ovum (egg) then you can become pregnant. If you have already done this then I suggest you get the Morning After Pill ASAP from either your doctor or buy it from a pharmacy. Really to protect against pregnancy you should use protection either condoms, the pill, the injection or the implant are the ones which tend to be used before you've had children. It is a good idea for you to talk to a doctor/ someone at a local youth centre/ GUM clinic. These will be able to give advice and give you free condoms.
If your next period is late then you can try taking a pregnancy test 10-14+ days afterwards just to be totally sure and to keeping your mind at ease.
i know no1 reli cares buttt i got the mornin after pill
and yes i know the way to prevent pregnancy is condoms blah blha but i happened daint it. caint turn back the past nowwww