This thread is for asking any questions that might seem obvious, tangential, silly or what-have-you. Don't be shy, everyone has holes in their knowledge, though the fewer and the smaller we can make them, the better.
Please be respectful of other people's admitting ignorance and don't mock them for it, as they're doing a noble thing.
To any future monthly posters of SQ threads, please remember to add the "stupid_questions" tag.
I second gjm's suggestion to talk to a healthcare professional.
Every year, the CDC updates and publishes their recommended immunization schedule for adults (patient version), which doesn't assume childhood vaccination. Below, I've summarized the parts that are most relevant to you.
Vaccines recommended for adults aged 30 years:
Additional vaccines recommended for adults aged 30 years with diabetes:
Note that if you have a concurrent immunocompromising condition (e.g., lymphoma), then live vaccines should generally be avoided. This includes the varicella, MMR, and zoster vaccines. Again, your healthcare provider can tell you more.
Thanks!