This morning, I took my Mini for my morning drive. About 30 minutes in it started idling rough. The S.e.s. light flashed a couple times and the oil light came on along with other lights. When I push on the gas pedal, it continued to run rough but gradually got better. At certain points it would die and I would have to restart it. I have checked the oil and there's enough, that it shouldn't send it into limp mode. I have just replaced the trans fluid about a month ago, so I pretty sure there's enough in there. The only thing I can narrow it down to is the loose exhaust mount or an electrical problem. Has anybody else had this issue?

P.s.
I lost my engine diagnostic tool, so I can't find out what the check engine light is trying to tell me. I might be able to purchase one and diagnose it if I can.