Field Medic

Maybe you've been a Fighter all your life, maybe you're new to it all. Either way, the one truth of the adventuring lifestyle is that people get hurt and sometimes dead. You may not have the power of a Cleric, but you have to do something.

With this Archetype, you gain proficiency with Herbalism Kits and Medicine checks. You also gain Medicine Points equal to your Fighter Level + Strength Modifier. So if you're a level 3 Fighter with a 16 Strength, you gain 6 Medicine Points. Medicine Points can be used for a variety of purposes, all with the aim of healing the sick and injured. You regain spent Medicine Points after a long rest.

Know-How

At 3rd Level, you gain proficiency in Herbalism Kits and Medicine checks. If you already have proficiency, you gain expertise (double proficiency).

Twice per long rest, you can now spend 1 Medicine Point to impose advantage when rolling a Medicine check or for an Herbalism Kit. You can use this feature an additional one time per long rest at Levels 7, 10, 15, and 18.

Physician's Skill

At 7th level, once per long rest, you can spend 3 Medicine Points to stabilize an ally who has dropped to 0 Hit Points. You can use this ability an additional one time per long rest at Levels 10, 15, and 18.

Practiced Perfect

At 10th Level, once per long rest, you can spend 3 Medicine Points to Heal an ally by 1d4 Hit Points. You can add an additional 1d4 at Levels 15 and 18.

Resourceful Healer

At 15th Level,  you gain Proficiency in Investigation checksn and always know where to find ingredients for Potions of Healing.

You can also spend 4 Medicine Points to cut the time required to make a Potion of Healing in half. Example: 2 caster days instead of 4. At Level 18, you can cut the time in quarter. Example: 1 caster day instead of 4.

Doctor's Compendium

At 18th level, you've learned enough to be able to determine what is ailing a person and how to cure it without needing extensive consultation. You no longer need to roll Medicine checks for these purposes.

At your DM's discretion, you may still need to make Investigation or Perception checks to find symptoms, and your success at delivering cures will as always depend on the DC of the ailment.