Brief Answer:
No need to worry about it.

Detailed Answer:
Hello dear,
Thanks for trusting us about your healthcare.
I have gone through your history and understand your concern.
Yes,it is true that immune systems is low during pregnancy but you can take proper precautions to prevent infection.
Means wear mask,avoid crowd and closed places,take healthy and nutritious diet with high protein diet with lots of vegetables and fruits.
Drink a lot of warm water and steam inhalation with Karvol plus.
Hope found useful, feel free to ask more information.
Good luck
Regards

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