OK just keep at it
I don't know where you got your advice from (you are bang on) a personal trainer is a good/great step to take (a lot would rather buy a watch?)
Weight training properly is good but it does need constant advice and use of a spotter. It is also tiring if done right. Weights tend to be more efficient in developing muscle this in turns feeds on calories (if you like 'fat'

helping you to further lose inches
With weights you need a break of around two days between routine its during 'OFF' periods that muscle is made not while or during exercise
This also applies with intensive Aerobics! One need not stop, but should reduce exercise on 'off' days to a mild routine such as just go for a walk or a swim (do not vegetate or do absolutely NOTHING)
Take another photo (every 3 months)as your looks are the best guide to make judgements on your improvements (date them)
Denise Howard has replied to you and she is a great source of correct info, so print it out (Mine may kill you so take care and keep getting a doctors opinion)
Petzl
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