I don't now if this will help Jayden but it helps my baby when hes teething, its a herbal remedy called "Teething Relief" by Brauer $14.95 for 100mls, the dose is 1ml for under 6months and 2ml of over 6months. You can buy it any good chemist or health food shop. You can use this, bonjella and panadol together( my doc said it was ok).
Also, I know its not the 'right thing' to do, but have you thought of putting him in bed with you so that when he wakes you can get to him befores he gets upset while your husband is away, then hubby can help when he gets back. At least you'll get some sleep, anyway just a thought.
Hope I have helped