The question is why do you still want to run?
I love running, not for exercise particularly, I just love it, but stopped very early. Running is high impact, that coupled with the extra weight of the baby, and ligaments loosened by relaxin is asking for injury. The thought of being laid up injured unable to get out and about when pregnant is just to horrible to risk.
Also running isn't a particularly good form of all round exercise. It is great for stamina and weight management (not that anyone should be trying to lose weight when pregnant), but completely hopeless for the muscles and core areas you will need for labour. It is far better to focus on exercise that works on the whole body - upper legs for squatting in labour (a good position which makes the most of gravity), back and core to prevent strain as the bump grows, arms for lifting the baby and buggy etc
Lastly, running is v uncomfortable as early on boobs hurt too much, and then later because the baby is on your bladder.
If I were you I'd get a new routine going, something with variety that exercises the whole body not just the legs.
Or you could just keep running I suppose, if it makes you happy.... just warm up very well, and stop if you get hot. My consultant's rule on exercise was anything goes provided you don't get hot or sweaty.