Good to note shishir Ritu could be culprit for long standing stomach upset.
Ur multiple system enrolment at the pick of ur life (personal/professional) may disturb u linger if wrongly addressed seperately so Ayurveda has unique n Holistic approach.
Next Steps
just now fruits n fasting for 8hrs with warm water can resolve for couple of days but choose heading vasant Ritu sandhi kala for Shuddhi n Rasayana therapy,