Right this is probably me over thinking things and Dr Googling

Today I noticed my tongue was quite large and in my mind it was swollen.
A bit of googling and I found out this can be due to your thyroid and so can sweating palms, palps and everything else I get.
I think the last time I had a blood test was 2 years ago. Also I am on Venalic XL (Venalafaxine 75mg)

So really the question is, anxiety or should I see the Dr? I know he'll just ask about my mental health again and I'm getting CBT soon. It's a genuine concern but I know doctors HATE self diagnosing and I doubt I'd get anywhere anyway.