Help me keep motivated

My husband and I just started ttc. It's only been a couple months but when I say I'm on my period he looks so disappointed. I cried so hard in the bathroom after telling him. I don't feel sexy anymore or when I'm in the mood I stay quiet. I don't know why. I don't usually get in the mood anymore and I think it's because I'm stressed and scared I might be infertile. Which I really need to go to the doctor about but I can't bring myself to make the appointment. I feel so awful mentally. Is there any way to keep me motivated or even inspired?