I asked H is he has been with anyone and he said no and that he was going crazy too because it has been so long. I believe him on that part so no protection needed.
Please don't be naive. He's given you no reason to believe him. He went months without contacting you, as recently as this summer, and he's done this to you before 12 years ago.
I believe this is the same advice your OB/GYN would give you. If you doubt it, ask her/him.
If your husband HAS been with anyone else, HE WILL LIE TO YOU ABOUT IT. That's not a sufficient foundation upon which to risk your own medical health, GF. If you think I'm being dramatic, there are other threads on these very forums about people who contracted STDs -- and worse -- from their WASs.