Having loads of sex

I have been trying for a very long time 1 year 7 months and now I’m just literally going to go for it,have sex multiple times a day because I know a lot of people that have done this and they have just got pregnant so it must work. I have been doing every 2 days but it’s not working Iv been to the doctors and they are more than happy to check us out but with only been 20 she says we’re still young and it will happen. Who’s the same cycle as me and is doing this too.