I received my 4th vaccine shot last week, all four of my vaccines have been different. I am basing my vaccine strategy on the theory of “Heterologous Prime-Boost Vaccination” which states using different vaccines as booster shots can increase immunogenicity.
I have no scientific research backing up my strategy with regards to 4 different vaccines and the Covid-19 virus but I’m betting it’s the best option. Here is a paper about my strategy from The National Library of Medicine
However there is an article about a British study that showed this strategy produced very good results with my first 3 vaccine shots in the order I took them.
My daughter (15) reacted to her last two shots. One put her down for a day, the next, two. I didn’t notice them at all.
We all took just Pfizer. It’s just what we were given. I was admittedly a bit concerned about reports of blood clots with some brands (I aready have thrombophilia, and a catalyst virtually guarantees clotting for me). No problems, though!