If you are truly in small claims court, the answers likely are:
1. Actual medical expenses incurred? Probably yes. May be subject to a test of reasonableness. Don't expect to get reimbursed for 100 visits to a chiropractor, for example.
2. Actual wage loss, maybe. Will need to be verified. Moreover, the physician who told you to stay off work may need to testify. That can cost major bucks that you likely would need to pay, enough that you may ned to take your case to regular civil court where you might have some hope of reimbursement.
3. Pain and suffering are almost never compensible in small claims court.
4. Future medical costs and wage loss almost never are compensible in small claims court. Small claims court does not deal with "conjecture" about what might happen. Moreover, these numbers often exceed the limit for small claims court in most jurisdictions.