Could this be temporal lobe epilepsy?

I have never been diagnosed and am not sure I have epilepsy, although I have a very strong family history of it. I am in my 20s and for the last 4 years have had persistent intrusive thoughts that are highly distressing. Often they involve an impulse to say abusive/offensive things to people, not anything I rationally believe but it has been very difficult to control the thoughts/impulses and for a long time I have thought I had OCD. I've developed ways to control this such as clenching my teeth or putting a hand over my mouth but it has not helped. Also, on about three occasions, when tired, I have found myself 'blanking out' and losing control over myself for a couple of seconds - I am then not sure afterwards whether I have said or mouthed something awful. This has always happened when I've suddenly felt incredibly tired.

I have been diagnosed wth depression before and have suffered from panic attacks a couple of times. I may have a psychiatric complaint, I may be simply a bad person, but I find the thoughts unpleasant and frightening, and also, merely on a practical level they would lead to social rejection, so there is no way in which I want them to continue, I just don't know how to stop them. I am posting here because I have been looking online and there seem to be links between OCD, temporal lobe epilepsy and coprolalia (the urge to say offensive things).