Feel like giving up😥😥

Me and my husband have been trying to conceive for 2 yrs we had since everyday sometimes 3 or 4 times a day straight for 4 months trying our hardest and nothing. Starting taking breaks in between he thought maybe it me, I try to stay positive and just tell him "no baby, it's just not time" since it does hurt him. But I'm reality I'm starting to give up too I just want to throw the white flag and say "ok, I give up!." Idk how to keep hiding it and staying happy and positive for my husband...