Trying to get pregnant!!

Me and my partner have been trying to get pregnant for almost 3years. I have pcos and my partner has a very low sperm count. Blood tests over the last 6 months show that although I'm having a period I'm not even ovulating!! We have been referred to the hospital and they're going to refer us to a fertility clinic for ICSI. I have no idea what this involves for us both or how long it all takes and I'm not really sure what it all means. I'm scared and I feel so alone. Any advice would be appreciated x