Rubella vaccine before IVF, please help!

I have <a href="https://glowing.com/glow-fertility-program">IVF</a> starting next month and I just had a blood test to show that rubella vaccine was not detected. I can see from my records that i had 1 mmr a year after I was born but it looks like I may not have had the second one then.

I now need to have a jab to get the vaccination tomorrow, but I'm panicking because I don't know if Its one injection or two. I read somewhere that its two and you have to wait a month inbetween them and a month after to get pregnant. Can someone help me if they know?!