I wouldn't worry too much, but if itbeases yourbmind, get checked again. Places can and would get into a lot of trouble if they did not properly care for equipment in between uses.
Even if it is a free clinic, they obviously aren't making much of a profit if any, that doesn't mean the staff is careless. As for gloves, hopefully they did use gloves, it can absent mindedly be forgotten, which you should never feel bad for double checking or asking.
I am just curious as tonwhy you think the speculum has not been disinfected/sterlized before it was used on you?
In work in the Medi-Cal field and free clinic or the best hospital in the world, I cannot imagine a dirty piece of equipment be used like that.
I mean I think I should get re-tested for everything and speculum, not speckling