Yes, took her to the doctor and CBC was advised which was normal, rest is advised to her. Thanks all for your guidance.

Please take her to doctor and get checked her BP. Ask her to take rest properly and don't exhaust herself. Ask her to stay hydrated, dehydration also cause chakkar.

30 weeks , but would could be the reason for that?

How many weeks pregnant she is ?? Happens at times...give her lemon juice and something sweet to eat...TC