Started vomiting 2hrs after vaccination. Went to ER who initially obtained CBC with stable Hgb and sent home with Zofran. Patient continued to have bloody emesis so presented back to ER where they did CXR which was normal, gave IVF bolus, zofran, repeat CBC with Hgb 12.4 and transferred to another hospital for higher level of care.  At the hospital, Initially made NPO and placed on IV fluids in preparation for possible endoscopy. Repeat labs showed stable hemoglobin compared to outside hospital. GI consulted and determined that hematemesis was most likely due to Mallory Weiss tear. Recommended carafate before meals, chloraseptic spray as needed for sore throat, continuing IV Protonix and IV zofran as needed, and gradually advancing her diet. On HD#3, she had another episode of hematemesis after eating solids. Overnight, tolerated liquids and solids without any further episodes of emesis. Tolerated transition from IV to PO meds and maintained hydration off of IV fluids. Due to symptom improvement, GI did not recommend endoscopy at this time and recommended that she be discharged on 1 week course of carafate, 2 month course of omperazole, and zofran as needed with plans for GI follow-up in 1-2 months. Had another episode of hematemesis at home after discharge. Went back to hospital and admitted again. The patient underwent upper endoscopy which showed no source of upper GI bleed. ENT was consulted and performed a nasopharyngolaryngoscopy which was negative for an ENT source of bleeding. She remained stable without an identifiable source of bleeding. Mom was comfortable with her being discharged home with close follow up by PCP. Pt seen on 6/7/21 at pediatrician's office for ER F/U. Pt reported she was still vomiting, 2x so far that day. The day before vomited 4x during the day and continued until the night. No more bright red blood in vomit. Describes vomit as blue and pink colors now. Pt does take a light green tablet that is her levothyroxine. Threw up the blue colored vomit immediately after taking this medication. Instructed to take zofran when feeling nauseous.   Seen again by pediatrician on 6/10/21- Currently, per mom pt is still vomiting. Last time she vomited was last night. Pt is taking omeprazole. Pt vomited 5-6x yesterday. Decreased appetite, but has been eating some crackers and rice. Complaining of stomach pain after eating and vomiting. Pt used zofran once and it helped a little. Pt denies self induced vomiting. Pt has ben observed by family when vomiting and they do not report any self induced vomiting. Pt denies trying to lose weight. Pt never vomits up food, always liquid. Vomit is different colors, can be pink or blue. No more red color in vomit, only pink. Pt drinks water and gatorade. Pt denies feeling any burning before vomit, but feels burning sensation after vomiting. Pt has been having BMs, not regularly and hard. Taking one capful of miralax at night.  Instructed for next five days, instructed to take zofran pill 1hr before dinner. F/U with GI.   Seen again by pediatrician on 6/15/21- Per mom and pt she is still vomiting about 5-6 times a day. Pt went to GI yesterday, given lansoprazole 30mg qd and told to continue zofran.. Pt is now able to eat all her meals, takes zofran 1hr before dinner. Pt has vomited 1hr after dinner and has only vomited liquids. Hematemesis has resolved. Still has some blue colored vomit, most likely from levothyroxine medication she takes daily. Stopped taking Miralax 3 days ago. Pt had a soft BM earlier this morning. Pt states she has occasional stomach pains after vomiting, takes a while to calm down but then resolves. Described as lower abdominal. Pt has nausea before vomiting, after vomiting takes 15-30mins for nausea to resolve. Pt states she had a headache with a heavy sensation when vomiting. No headaches at night, but does vomit 3-4x overnight. LMP: 2wks ago. Recommended to go to ophthalmologist to r/o papilledema. WIll contact hospital to get results of any bloodwork done inpatient (reviewed - only CBC done inpt).. F/U in 1wk. Ordered MRI brain w/contrast. CMP. lipase, amylase, celiac disease panel. All results pending.