Well I’m hoping this month

I have my period down to a science now and I am hoping and praying that this week will be the month that I miss my period and I’ll have a positive pregnancy test. I did go to a fertility specialist because my other half is a quite a bit older than me he came back with a higher sperm count then we all thought. So I thought well maybe the problem is me? So now booked an appointment with the specialist to see if it’s on my end. When I got pregnant with my first child when I was 22 , the first time We Tried I was pregnant. This is seven months later and nothing do you think it could be on my side because I’m 41 and I’m in those years? I know lots of people that are older and have children at that age, my girlfriend just had a child at the age of 39 didn’t even know she was pregnant till she was 28 weeks pregnant. Because she didn’t get a period but regularly and she’s a bigger girl she couldn’t tell but she could feel movement so she decided to go to the doctor and get a checked out and did a pregnancy test and it came back positive it said +3 weeks to her surprise it wasn’t just +3 weeks it was going on or 29th week nor to say she had to fly down to Toronto Ontario and have her bed rest until 34 weeks and then they decide to take the baby due to her complications with having the baby inside her (high blood pressure ) and fluid retention, just not a good healthy way for a baby and yourself. So anyone can get pregnant at any time it’s just when you wanted it seems like it doesn’t happen and when you don’t it seems like it does people are very lucky who can just get pregnant very easily you only have a window spand of a short period of time so I’ve heard is this true? (20-36 hrs)