You would still have the same age, gender, personality, skin color, etc. and you would be able to speak at least one local language and would know basic information of the era and place. Your family, social standing, and such would be randomly picked.
Can always take the knowledge with you. Memorize how to do critical parts of plumbing. The antibiotics part yeah that would suck.
Ok, we need to go to the store and buy some pipes.
What are pipes?
Oh. I think I fucked up.
Come on, obviously they knew what pipes were in the 1940s. They are cylinders made of lead.
You could probably memorise how to identify the right fungus and isolate penicillin, right?
Exactly. Although a person can really only retain so much info, but yeah if you can figure out how to memorize both anti biotics and plumbing you’d be a very popular person and potentially be an excellent leader.