boyfriend tells me that a close friend is pregnant

Becky • BFP on 2 May 17 ❤ expecting baby number 1 on 9th Jan 18 actual birth date 01.01 18 👶🏻❤️ 👼my little girl died 23 July 21. 👼 TTC baby no.2.
So he casually tells me walking home that a close friend's partner is 12 weeks pregnant and I'm gutted. I also feel awful for feeling this way.  Suddenly I was fighting tears as he cheerfully yet unbeknowingly tells me all about it.
I had a chemical back in January and I really thought I'd accepted it. Until today. This lady would have conceived in January same as me 😢
It's hit me hard I think because both us couples started to try and conceive a baby  around the same time. I can't talk to my partner about it, I don't want him to see how upset I am, especially since I've made it clear I wasn't upset about our chemical.
Just wanted to vent I suppose, I'm frustrated and sad 😢 xxx I know I have to stay positive and we haven't been trying long but sometimes it's hard when everyone is getting pregnant around me.