My son had it (he had his head turned to the right in the womb, too). My pedi said he'd out grow it, but being the nurse I am, I didn't believe him, so I took my son to see world reknowned craniofacial surgeon dr. Jeffrey Fearon (I work with him; he admits his surgical patients to my unit).
He told me to forget all the stretching exercises & not to worry about the shape of his head. He said do tummy time & make the world around him interesting enough & he would stretch his own neck. He also said that the brain would determine the shape of his head,, so I didn't need to worry about it. Also he said that helmets were pretty outdated treatment for this problem & the majority of kids end up totally find with absolutely no intervention.
So my opinion/suggestion is you have nothing to worry about. My son's head was totally flat on one side. We left it alone - made his world interesting & gave lots of tummy time & by about 10 months, it had self corrected.