AF after getting off BC

This is our first month ttc, but I have wanted a bay for five years now. We wanted to make sure we paid things off and we're at least 75% in a good place to have a child. He just started his new job last week so he said okay! On our 6 month wedding anniv we will be going to Ireland for our honeymoon! Probably the only big trip we will ever take so at first we wanted to wait until we were there to get Preggo so I wasn't sick the whole trip. Well i was supposed to start af and be on it for the first two or three days, so we just decided to go ahead and start a month early so it won't be plausible while we're out there. I stopped my bc feb 25th and started prenatals. Made sure to bd a lot the most fertile week. A week later I was feeling just about every pg symptoms other than sore boobs (but they were so itchy!) but stil bfn. Af was supposed to start 3/21 and nothing still today. I feel like I have slight cramps and just the general feeling of af, but nothing is there. Took a test 3/21 PM and nothing but I know first pee is best but was running late this morning. At this point I planned to just wait until af didn't come for a week and then test just because I have af symptoms. Any one have af start very late after getting off bc? Not even sure what to expect. Maybe this means if I'm not Preggo I can do it in Ireland after all?! #myheadiskillingme