The Dispatch | Expert | Scudo Hub

Here is what i did gentlemen, need your suggestions on what could be the issue

I have a expert 1.6 hdi 2011 with 107000miles on the clock. Changed the engine oil  and oil filter today. Unfortunately filled in5 ltrs of 5w30 and drove for a mile car gave oil warning light so thought may be less oil stopped after driving another 6 miles and topped up with another 1.5 ltr oil. drove another 5miles and car engine started making noise. Went to a nearby friends house and realised too much oil , drained around 3 ltrs of oil and then drove the car again for 500yards, car engine is still very noisy.
Also when i drove the oil red light keeps coming and going and stop light also come and goes with a message oil pressure low.
What could have i damaged?
In total drove the car nearly 12miles with excess engine oil, foolish me.

Please advise.

Thanks