So you have a tooth with no crown on it on the right side as well? Its likely that it may also be causing a problem as well. Is it in the same area as the discomfort? There's no real way to know through the internet exactly which one is causing it. You should see a dentist and figure it out. Its always best to address the issue before it becomes a serious problem.
My wisdom tooth is still surfacing out, its on the right upper side. 2 of my wisdom teeth are still here i never got them out since its not bothering me, it only bothers me when its surfacing out. I do have a tooth on right side which had a crown that fell off, i flossed it and brushed it really good and it seemed to take some of the pain out
I would recommend going to a dentist and getting it checked out. At 25 weeks pregnant, it would be ideal to get any necessary emergency treatment done sooner than later. It becomes more difficult to sit in a dental chair for any lengthly procedure as you progress through your pregnancy.
Do you still have your wisdom teeth? If not, you may want to get it checked out by your Ob/Gyn instead if its in the cheek and not in the jaw.