Hi and thanks for posting. What you're going through - and the questions you're asking- are all very common, to be sure.
First, virtually everyone who's sexually active gets one or more HPV infections in their lifetimes. A person might have the virus for weeks, months, even years before any indication of it emerges (in your case, an abnormal Pap test). Anything that stresses the immune system (pregnancy is certainly one thing) can serve as the catalyst for HPV to "wake up." HPV infections are often detected in established, faithful relationships.
Fortunately, they are rarely dangerous and would not be expected to complicate a pregnancy. The most important thing is to go for follow-up exams as directed by your health care provider. Cervical cell changes due to HPV often self-resolve and don't always require treatment. When treatment is indicated, it's generally an out-patient procedure that, along with those follow up exams I mentioned, has an excellent track record in protecting a woman's health. HPV infections are common, serious health outcomes related to the virus are not. Go for those follow up exams!
There's one take home point I want you to understand: you, and your husband, are very, very normal
Post anytime, and I'd appreciate hearing from you after your next exam.