When to see a doctor..?

When do/did you decided to see a doctor about fertility issues.? My husband is 23 I'm 21 we are very active (go to the gym 5-6 days a week) we eat healthy (most of the time)and we are 3 months ttc almost 4... I'm feeling discourage. Most of my friends got pregnant no problem, most actually weren't ready for kids. I track everything day to day and still nothing... my husband had a benign tumor on his right side groaning area when he was born and had 2 surgeries to get it removed when he was a year and half... I'm nervous that might play an issue. Idk maybe I'm anxious...I put it all in God's hands🙏 when God decides to bless our lives.. we will be thrilled!