Congrats for the achievement. I agree with you, a visit to a dietician is good; however, the dietician alone will do nothing for you, if you would not be willing to do something for yourself. The bottom line is always this:
It is doable. But is really difficult. And if you are willing to do what it takes, there should be no reason why wont win at the end of the day.

As for you, losing 5 kgs in 2 months is good (it is also not pathologically significant loss), but you must think of later: how to maintain the weight loss.