Greetings to all from MedHelp! I am a 19 year old Chinese male who is who is concerned about his loss of weight without any apparent reason. I am 5'7" tall. For the past 4 years my weight has hovered around 132lbs but had risen to 137lbs after my recent vacation. I decided to lose some weight 2 weeks ago and started on a High Intensity Interval Training Program (HIIT). For 1.5 weeks I ran every day alternating between 3.6km runs (moderate intensity) and 2.4km runs (high intensity). 1.5 weeks later, I was back to 132lbs.
However, I very unfortunately came down with a bout of throat infection. I decided to wait it out since I had no fever but two days later, I experienced tightness in chest, was coughing green phlegm and ran a fever of 38.7 degrees. Do note that I have a habit of weighing myself daily and I was still 132lbs at this point of time. I decided I didn't want to wait it out and went to the doctor who game me Seratide (inhaler, supposed to be used twice a day for a week) and antibiotics (clarithomycin, twice a day for 10 days) Strangely/gladly enough, I was almost completely well after 1 day of taking medicine!
However, I am concerned because one day after I started taking the medicine I weighed 131 pounds and 2 days after I weighed 129 pounds! This is something I have never experienced before. I have had a considerable amount of experience with weight loss and even when I impose calorie restrictions to my diet and do HIIT every day, I normally only lose at most 4-5lbs in a week. However, I lost 4lbs in TWO days and this alarms me
Do note that I had a modest overdose of clarithomycin (Accidentally took 3 a day for 2 days). However, I had no diarrhea, and in my opinion I was eating more than when I was dieting 2 weeks ago.
Should I be worried that it is something serious? How should I be viewing this unexplained weight loss? Please help.