Lost all hope

I’m 35, My ex husband and I tried for a year, since I have been not actively trying but also not using any protection with my boyfriend for 2.5 years and nothing (and we have sex daily) my ex didn’t have any children so it could have been either of us but my boyfriend has two. My heart is broken, I’m feeling infertile and just broken. I had brain tumor surgery a year ago and I thought the stress relief of getting through it would help. But nothing has.

Oh and it doesn’t help that three friends around me are preggo