Just had my booster dose last day.

Go do bloodtest 1st, i suggest. If >0, then just pump booster, which cost 50 or more.

If >100, then ok. U r good to go.

If = 0, then too bad. U need to restart the vaccine dose, which is 3 dose in given period of time frame.

My doctor told me usually, if u r younger then 30 yrs old, we already has vaccine within us which planted by doctor when we were infant.

But to Ease your worry, go do blood test.