How long one should watch for clot symptoms after getting astrazeneca vaccine ? is it 2-3 days or so? i just want to know when to stop worrying about clot issue?

This is a rare condition. "A careful review of all available safety data of more than 17 million people vaccinated in the European Union (EU) and UK with COVID-19 Vaccine AstraZeneca has shown no evidence of an increased risk of pulmonary embolism, deep vein thrombosis (DVT) or thrombocytopenia, in any defined age group, gender, batch or in any particular country"

You are more likely to be struck by lightning than getting blood clot from the vaccine. Quit worrying. Wish you good health!