I Have Excessive Bowel Movements, Sometimes With Diarrhea; I Pee

I have excessive bowel movements, sometimes with diarrhea; I pee more than usual; I experience nervousness and anxiety sometimes; I am insensitive to heat. I was born and raised for some years in a very hot country and I know for certain this didn't happen before. Now, for a while, I get hives when my body gets hot - whether it be from the weather or whether I get hot from embarrassment. I also sweat a lot. I have difficulty sleeping and I feel tired a lot. On top of this, I eat so much but I never gain weight. I also have a loss of libido - just don't get excited anymore.

I think it's hyperthyroidism but I wanted to check here before going to my doc. Please let me know if that's also what you think it is. Thanks.