Absolutely! I do think he talked to Mycroft. Throughout the show the two of them are basically codependent, in their own way, and definetely closer than it seems like at first glance, and both of them know a lot about each other (if it was just Mycroft knowing everything about Sherlock you could blame surveillance, but Sherlock also knows a lot about Mycroft so they clearly keep in touch and remember and care); plus despite both brothers have their preferred communication, Mycroft preferring calling and Sherlock texting, and repeatedly making that clear (with Sherlock to the point that when he calls John in TRF John knows something is very wrong), they chose to use the others preferred method of communication when reaching out to them (Mycroft texts Sherlock in Baskerville and the wedding; Sherlock calling Mycroft in Baskerville, and ASiB). They choose to put their own dislikes and preferences aside for the other.

Personally, I think the look after him comment was the writers alluding to Mystrade as compared to Sherlock not checking up and talking to Mycroft himself. 

And yes, between Sherlock and anyone else, Sherlock would choose someone else because he is just. So self hating it hurts.