Please assess the completion status of the following clinical trial:

Trial Title: Acute Headache Treatment in Pregnancy: Occipital Nerve Block vs PO Acetaminophen With Caffeine

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: NONE
- Phase: PHASE4
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion criteria:~1. Women presenting to Maternal Evaluation Unit at UAB hospital~2. Confirmed live intrauterine pregnancy (previous ultrasound, bedside ultrasound, fetal monitoring)~3. Complaint of headache~4. Minimal pain level of 4 on VRS~Exclusion criteria:~1. Systolic BP \>= 140 or diastolic BP\>=90 with 1+ protein on urine dip~2. Systolic BP \>=160 or diastolic BP\>=105~3. Focal neurological symptoms~4. Altered level of consciousness defined as not being oriented to person, place, situation, and/or year~5. Complaint of seizure~6. Known under lying brain abnormality~7. Fever~8. Use of \>3 grams of acetaminophen in past 24hrs~9. ONB in the past 3 months~10. Reported allergy to study medications (Bupivacaine, acetaminophen, or caffeine)

- Gender: FEMALE
- Minimum Age: 16 Years
- Maximum Age: 60 Years
- Healthy Volunteers: t

Study Arms:
- Occipital Nerve block (Type: EXPERIMENTAL): 1. Trained OB/GYN providers will perform a physical exam to access location of occipital nerve injection based on palpation of bony landmarks.~2. Site of injection will be cleaned with an alcohol swab.~3. 5cc of 0.5% bupivacaine will be injected into both right and left occipital nerves using a 2.5 inch 25 gauge needle. The needle will be changed between injecting sites.~4. After injection is completed sterile gauze will be held on injection sites for 2-3 min or until bleeding is resolved.
- Oral Acetaminophen/Caffeine Group (Type: ACTIVE_COMPARATOR): Acetaminophen 650mg PO and Caffeine 100mg PO (both Level A treatments for acute headache)

Based on this trial design, predict the completion outcome and termination type (if applicable).