Sally,
The maximum penalty for s.39 assault is 6 months imprisonment, the maximum penalty for s.47 is at least 5 years (I just forget exactly what it is) I suspect that a custodial sentence is unlikely whatever charge he was tried for. The important thing is that you stood up to him, you took control away from him, and I imagine that has made more of a difference to him than, perhaps, it has to you. Although you say you feel empowered, which is great. I would also urge you to go and see a solicitor and take out a non-molestation injunction against him with a power of arrest. If he makes any attempt to harrass you during the course of the injunction he can be arrested and taken before the next court. Imprisonment is almost guaranteed. Normally they get 28 days for the first breach and it's doubled for each subsequent breach. Now that's what I call empowerment!!!
.......and yes, I am a bloke, we're not all ******** fortunately.
Best of luck
Contact your local womens aid group for help/advice. If you don't know where they are let me know where you live and I can get a contact number for you.