For singing the church out

Congratulations on your pregnancy. It's brave of you to decide to keep the baby. Hopefully, you'll be able to enjoy it in the end.

The most likely scenario is that it'll happen on Saturday, but it could also be the day before. From what I understand, sperm can survive for up to 5 days. There can also be some sperm present in pre-ejaculate. And just one is enough

My opinion is, regardless of which time it is, that he should take responsibility. He knows just as well as you do that you can get pregnant. Hopefully, you two can figure things out together. Wishing you lots of strength in the coming days!

I think it's impressive that you didn't get pregnant for so long, since those methods aren't reliable. Even before the "singing until you leave the church" phase, there's pre-ejaculate, and you can just as well get pregnant from that. Sex on Tuesday and implantation bleeding on Wednesday doesn't add up—the egg is fertilized and traveling for a few days before implanting. In my opinion, it could work if you look at your ovulation. But the most important thing is, you're pregnant. I really want to congratulate you and hope your partner feels the same way as you do, and that you'll have a healthy baby.

There is indeed a long period in between (Saturday night - Tuesday, 3-4 days), but it can still happen. It's indeed not the most reliable form of contraception, but you can also get pregnant with the pill or IUD (though the chance is much smaller).

I understand you'd like to know how it happened, but it's hard to find out. Don't think that your partner was careless; at that moment, you both made that decision. And when you're drunk, you don't think things through properly either.

I completely understand your fears. Legally, you are protected against dismissal, etc., but an employer can also cite another reason for not renewing your contract. With a lot of traveling, you'll surely find a good solution. For example, there are daycares that offer night care. Or maybe supportive family who can help out.

It might take some time before you've found a place for everything, but hopefully, you'll be able to enjoy the pregnancy and your beautiful baby.

I find it kind of funny that you call your boyfriend careless, while you both have been fine with a method that’s just not entirely safe for years. Both “withdrawal” and “periodic abstinence” do carry a chance of pregnancy. No wonder it took so long...
I get the impression you’re mainly looking for a reason to justify your pregnancy. The fact that you used this “contraception” method suggests to me that you’d actually like a baby. Same goes for your boyfriend. If you didn’t want kids, you’d make sure you couldn’t get pregnant, right?

He'll probably need a little time to get used to the idea. But you're both responsible for how it came about.

I think the work issue will sort itself out in the end. You're two people after all, so you can surely figure something out somehow. Besides, they can't legally fire you because of pregnancy. Although you shouldn't fly after a certain point in your pregnancy. But well, there are also many jobs where you're not allowed to do certain things during pregnancy, and in those cases, temporary alternative work is usually arranged.

I also assume that after so many years, he won't just leave you hanging with something you're both involved in.

Flying is allowed as long as you're healthy, up to 34 weeks (somewhat dependent on the airline). In your case, I think the bigger question is how you'll manage once the baby is here.
A night-time daycare is of course a solution. But it's a question of whether you want that. If you don't have time/want to make time for your child (and your partner doesn't either), that's not great for the little one. My take is that if you really want a baby enough, it'll work out. Though I'd add that you've been irresponsible up to now, and are now facing the consequences. Think before you act.

Wishing you lots of wisdom.