What’s next after BFP?


I just got my BFP this morning. Well, I actually did 2 tests because I was so surprised. First day of my last period was February 8th, which puts me at 4 weeks + 1 day. Not sure if it makes a difference to any of your responses but I am 37.

So, what do I do now? Do I keep testing over the next few days? Do I make a doctors appointment? When do I tell my husband!?!? When do we tell close family, like parents & siblings?