Thyroid problem or not. I am not wrong?

So i went for some other tests.. Then i also took thyroid test as i had doubts that i might have it because I sweat a little extra i think.. I don't want to have any thyroid problem.. According to my report.. My tsh is little higher and t3 -t4 are normal.. T3 is 0.2 more than max limit though. Tsh is 6.390 which is the main issue. I searched about both hyperthyroidism and hypo.. In both cases, t3 & t4 shouldn't be normal.. But mine are normal if I am not wrong? high tsh is related to hypothyroidism.. but with low t3 t4.. My t3 & t4 are normal.. Only tsh is a bit higher.. So I don't know if i should worry or not.. I don't want any lifelong problem or take medicines lifelong.. If I talk about hypothyroidism symptoms.. I don't feel sensitive to cold.. Rather i sweat more in hot environment.. I feel good in cold environment. Also.. I am overweight.. But it's not sudden increase.. I started gaining weight 4 years ago when my lifestyle changed.. I don't have dry skin & no fatigue.