Getting pregnant when you can hardly see your partner?

Ladies! I’m wondering if anyone has any tips or tricks, I only currently see my partner every 3 weeks sometimes longer😒 We are desperate to conceive our first child and every time I test is heart breaking because nothing then I come on😭❤️ We have intercourse when we see each other, so I guess it’s pot luck.. but the odd time I’ve been ovulating - including the last time (last Sunday) I’m due on in around a week. And praying to god I’m pregnant this time around🙌🏽💖 We just desperately want our little family but I currently can’t go live with him (My mum needs extra help RN) or he can’t come live with me due to work😩