>arms and chest still hurt 2 days later
That's perfect. That means that you can exercise every three days - like you should. Split your week to three parts - 1 day when you exercise (no more then 30 minutes for now) then 1 day of rest. For example:
- Monday: chest and back exercises
- Tuesday: rest
- Wednesday: press and legs day
- Thursday: rest
- Friday: biceps and triceps
- Saturday: rest
- Sunday: rest
Just google "three-day split for beginners" on Youtube or somewhere else.