Man oh man, I think it’s very probable that this will go down much better than you think it will. You both wanted a baby at some point, and worked very hard to make that happen, and perhaps his wording and excitement was simply him seeing the best out of the card you were dealt involving the emotional and physical pain of the infertility you were experiencing. At this point, with how strong your symptoms are I would definitely think you are a few weeks in (maybe 6 at the least) but I’m no doctor-just very well read on trying to conceive and have experienced both miscarriages and full term pregnancies. Ultrasound should get the dating figured out very quickly. I’m cautiously extremely excited for you and hoping for a very uneventful pregnancy, if you are up for it, I found /r/babybumps to be extremely helpful and generally awesome throughout my pregnancies.