Is it really normal. For ttcing to take this long?

Britney • I'm a happily married to the love of my life and I'm a 27 year old who is graduating university soon this year and is hoping to start having some beautiful babies soon! We have had one pregnancy and miscarriage at 7 weeks so far hoping for a rainbow baby
I know many others have been trying for longer than us but it's been seven months so far is this normal? Should we get checked out? We're really. Worried about it I had a chemical pregnancy this month and we suspect I did the first month we tried too any advice?