I just feel like something is wrong

Me and my partner have been trying for a while, I was told earlier this year that I have endometriosis but since we are trying for a baby they suggested doing the surgery after a year of trying.

I know I should be celebrating but something just doesn’t feel right, I can’t get out of the bad mood and every time I go to the bathroom I’m expecting to see blood.

What’s wrong with me?!?!?