Perspiration Problems...?

i sweat alot. i walk to work it only takes 20 minutes and i try to walk slowly but i sweat a lot even when its minues ten degrees i have to take off layers! my clothes smell after like half an hour of wearing them, but its not the usual BO smell, its a mixture between deodrant and sweat its horrible. I can smell it all the time, it makes me so embared, i think others can smell it too! anyway i've tried every normal shop bought anti perspirants eg dove,sure,garnier,nivea,mum! what can i try next? i get so upset, i want to be normal.