### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
I am a very fair skinned female of twenty years living in the northern half of California. I weigh may be 165lbs at 5 2 . I wonder if I possibly have either a stomach ulcer , in the process of one, a parasite/bacterium or may be none if these. I have had tightness and heaviness that I recognize, occasional burning sensations that have spread directly from this 3-4inch area below the edge of my left breast to my back in a 3inch line., seemingly bloated a bit but it s not always after eating and it s not as often as when it flares up at night and peaks usually 3-5am as. This episode has been going on for at least two weeks now. I ve had muscle spasms lower back and in this area but I can t decipher the frequency :(. This has been going off and on since around march of this year or may be earlier this year, I think. I remember when I went for an appointment a few weeks I believe after I noticed for the first time and she thought I had a benign cyst on my spleen from just pressing on and around the area?! When I had the ultrasound the lady never mentioned the area of concern at all on the end results. Could this even be an allergic reaction? I do take the 24hr non drowsy allegra 180mg of fexofenadine HCI one per day since early march.

### output:

Hello,itachiwbb969,First, let me assure you that an incidental finding of a small cyst of the spleen is not of concern and your symptoms are not from that. Burning sensation and also pain occurring at nights do suggest acid problems. I am not sure if you have had any X-ray or endoscopic studies of your stomach. I am sure that they have ruled out gallstones after the ultrasound examination. Allergy medications very rarely cause gastrointestinal side effects such as nausea, not severe abdominal pain. If you have done any travel outside of US, like Mexico or Far East, a stool examination for parasites is a good idea. Hope this will help you, Wish you well