Please help Insect bite

Sr

Please someone tell me what insect would have bitten my baby. Doctor said to wait for one day and bring her day after if she is uncomfortable. She has not slept properly for last 2 days. She slept at 2.30 am n for the whole day slept only for 10 to 11 hours including the night nap. She is 5 months now.

I live in South India. Coimbatore to be precise. Please help ladies. TIA