Potentially raped?Watch this thread
Or wear one at the start then take it off without asking you if you were willing to have sex without him using one?
You made it crystal clear that your consent to sex was conditional upon him using a condom during sex.
As soon as you told him to pull out, you ended your sexual consent.
All further intimate sexual activity after that occurred without your consent is illegal.
Certainly, you should tell your friends and whoever else you feel you can trust to support you through this. Make sure you are tested for pregnancy and STIs, and speak to someone about counselling.