Since 2003 the band for TSH is between 0.3 and 3.0. Anything higher needs to be addressed in some way, like starting a low dose of levothyroxine. I would back to your GP? Your pituitary gland is having to work overtime in order to get your thyroid to produce hormones.
Late onset T1, several auto immune issues.
Humalogmix25 twice a day, Methotrexate 25mg once per week, FolicAcid 5mg once per week, prednisolone 5mg daily, Allopurinol 300mg, Calcichew-D3 800iu, Levothyroxine 50mcg, Atenolol 50mg, Losarten 100mg, Aspirin 75mg, Nicorandil 20mg, Nitrolingual GTN spray, Metformin 2000mg, Allimemazine 10mg, Lanzoprazole 30mg, Atorvastatin 20mg, Co Codamol 8/500mg, Depo Medrone (Methylprednisolone) or double Prednisolone for 7 days in case of RA flare.