2001 5.9 coolant in oil

I have a 2001 dodge ram 5.9 with 170,000 miles, about 3 weeks ago I changed the timing gears and chain and replaced the harmonic balancer, I've been losing coolant since then and this morning I checked the oil level and it looked like chocolate milk and the level is slightly above the upper safe line on the dip stick. I was wondering if I messed up putting the new timing cover gasket on and now coolant is getting into the oil? There's no knocking or white smoke, it hasn't lost power or perfomance, and there's no external coolant leaks, head gasket or the timing chain gasket?

Thanks for any input.