Thanks for the query.
I understand your concern.
During pregnancy under the hormonal influence the size of the breast increases, so inner wear should be changed accordingly.
If the swelling is not associated with pain, redness etc, there is less possibility of infection.
If swelling further increases in size or becomes painful, better to consult your doctor once and get examined to find out the possible cause of the problem and take treatment accordingly.
These Q&A’s are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.