Hi...smoking is really never OK...
Is your UC throughout your colon or limited? You could add where it is into your siggie so we don't keep asking you. It is an important bit of info for many of us.
You should be on rectal meds Jessica....call the doctor for a prescription. Ask him what he thinks you should be on...either the 5ASA retention enemas(Rowasa or if you're not in the US..Salofalk), or steroid enemas.
You're not on a high dosage of Asacol, it could be that you're not on enough. I don't know if the Entocort gets through the whole colon...much do some reading.
Rectal meds to start at least.
It's unfortunate you're feeling crappy....but 'tis the season with the added stress (subjective) that we have on us for whatever reasons.
Hang tough...call for the rectal meds before upping/changing any of the oral meds.