Hello,
Thanks for posting your query at DoctorSpring.com
Yes, you need the booster shot.
It is completely safe to have it while breastfeeding.
There are no ominous side effects.
Do not worry.
Since you do not remember when was your last booster, please have one.
The furniture was quite old and rusty , don't ignore it.
All the best
Please feel free to discuss further.
Regards.