This is something you should discuss with your doctor and other professionals.
These immunizations are standard, especially HEP A and Tetanus. HEP A is given as a series of two injections that are spaced a few months apart. You should follow up with the second. The Tetanus is something you will probably have a mild reaction to and develop some soreness and swelling at the injection site.
The Yellow Fever vaccine has been given for many years and is a standard requirement for obtaining a visa to many countries but there can be side effects. Those side effects need to be discussed with your physician and also your prior medical history needs to be reviewed for any contraindications. (potential adverse effects)
In all of these cases the chances of adverse effects are very low.
My philosophy, with the pain aspect, of all shots for travel is that: I've hurt myself a lot worse when I've stubbed my toe and I didn't get a trip out of the deal.
__________________ Cruisemates Community Leader/Moderator
"There is a great difference between being well traveled and just having been to many places." ~Me
Linz----Mike has given you great advice. We have just gone through the shots and tablets and no ill effect. EXCEPT--I'm 75 and went to the health clinic and the nurse ask me where I wanted the shot and I told her the left arm. She weighed much more than me and she replied, "Sonny boy drop those pants--this one is not going in the arm". I complied.