HI I recently stated noticing that every few days I'm swollen in my vagina, and now I'm missing my periods, I would go to a doctor but I have no heal insurance, and I need help ASAP! My question is can vaginal swelling cause missed periods? Is this an std? Or is this a yeast infection?

We can't diagnose over the internet. You will have to go to the doctor to get this sorted out.

It can be any of them, even possible pregnancy and infection, It can be a STD, it can be many things, Thus you go to the health clinic, check out pregnancy, check out STD and infection, if those are clear, you have to go to the doctor for sure