Im 27 weight is 169 im obese i'm now 6 weeks pregnact and will like to loose some fat in arms and face is it healthy to exercise?

Yes : It is important to exercise during pregnancy. However it is not wise to try to lose weight during pregnancy. Eat a good diet with 5-7 servings of vegetables and 2-3 servings of fruit every day as the foundation. Add 65 grams of protein for the average woman daily. Get 3 grams of clean epa/dha omega 3 fish oils. Some whole grains, nuts and beans should round out the calories.

OK for most: For most, It is ok to exercise while your pregnant, in fact, it is desirable as it can help prevent/east back pain, improve sleep, help your mood. You obviously don't want to go overboard. In the end, you should review any exercise plan with your OB to make sure there isn't a more specific reason why you shouldn't undertake exercise. Best of luck with your pregnancy.