Tongue tie will not give such symptoms but some other issue could be there with his feeding or digestion it is better to consult a paediatrician and get your baby checked clinically before taking any measures.
MBBS, Diploma in Child Health (DCH), DNB (Pediatrics), MNAMS (Membership of the National Academy), MRCPCH, Certificate in GI Endoscopy
Post surgical pain could be disabling at times, but the joy of becoming a mother should help you overcome the pain. Congratulations on the new arrival! your baby needs your feed. Only you can overcome the pain with your will power.