I had my Astra- Zeneca Covid Vaccine shot yesterday. Twenty four hour later I have had minimal side effects. A bit tired, and some muscle aches. Women tend to react more than men, and the staff were vaccinated earlier this week and had more pain, swelling at the injections side, fatigue and some headaches. Those symptoms are receding now. My view is that this is a small price to pay to avoid getting Covid. In future you are most likely not going to be able to travel anywhere without a signed certificate of having completed a course of one of the Covid Vaccines.