I'm new too this & need advice ladies 😘

Hey girls!
So me and my partner have been together for 3 years & we have been TTC for 2 & 1/2 and we have had no joy at all! 
Has anybody got any advice? It just seems everybody I know is pregnant or have had a baby and I just get so upset all the time when I know I should be happy for them? I have never had a positive result and I am starting too get frustrated 🙈 I just want too give up! 
I feel bad on my partner because of how sensitive I am with the topic and I feel like I bring him down on the situation too? He tells me it will happen, it won't be long but I feel like it never will. 
My cycle and my ovulation seems too normal but I just have no luck! 
Any advice would be great ladies! I would really appreciate it XXXX