Do I need to stamp any stamp on the household registration book to get a marriage certificate?

No need to stamp separately. When handling the personal information page of the household registration book, the handling unit will affix the unit seal on the personal information page (generally: a police station of a public security bureau). What you describe may be that there is something wrong with the other party's books.

In addition, the processing time of local civil affairs bureaus is inconsistent, and there may be material differences. To be on the safe side, I suggest you get the phone number of your boyfriend's hometown civil affairs bureau first, and then go to the local area to get the license after telephone consultation. Because, at this stage, you must go to the civil affairs bureau where your household registration is located. Boyfriend's hometown can only have one civil affairs bureau. If you can't find the phone number after confirmation, you can call local 1 14 to find it.