Before spending any money run the truck with a new filter and oil. Run it for a week or more. No real need to hop on anything until a noise rears its ugully head. I couple of years ago I was doing a snow run and lost oil pressure at High RPM and did not notice it as I was too busy watching where i was drive the truck. Did finally notice, turnd the truck aroun and went home. Never heard a noise at all, all of sudden about a week later I lost Oil pressure, not totally but a good bit of pressure. I desided to cut open the oil filter and see what I could see, I found non ferious metal in the oil filter, a good bit. I knew I lost a bearing. Funny thing no noises still. Well after dropping both pans and looking in side lots of non ferious metal. I wondered which bearing lost it guts and how much damage I had. Well I looked all at the rods, all ok no scratches no marks of heat, etc. Well i started to pull down the mains and #4 (center) puked it guts all over the place, but no scratches what so ever on the crank. I never heard no noise, nothing, just oil pressure loss. The down ward rod bearing had no metal gone through it at all. I did order all new bearings and put them in. Ordered a new oil pressure relief spring as well for the oil pump. All was fine with the engine after.
So I guess what I am trying to say, is you may of hurt the engine, it may not develop any signs or symptoms right away. Not much really you can do right now. So run the engine, watch it like a hawk and see what devolops. Listen for noises.
If you are slightly parniod, cut open the filter that created this and see what is inside it. Remove the lower (steel pan), this will only take about 15 minutes and some heat to release the sealant. Look inside the lower pan and see if you have any bits of metal in the bottom. Or if you want to drain a quart out in a small pan and see if any metal is in the oil(pan must be clean). No need to send to a lab. You will see any metal if the bearings are starting to fail.
Good luck there is lots of way to go about this and others have given you great ideas as well. Just the way I would go about stuff. later robbie