ttc for 4 years now!

so this is my first post in here my bf and I have been ttc for like 4 years now and this month we decided to use opks and preseed I'm only 3 dpo but I am holding and praying this is our month. idk why it is taking so long tc I have a 7yro daughter had a c-section with her then had the meriana in for prolly about 2yrs after she was born and for some reason it came out one day after my ex and I tried anal for the first time (never doing that again) but when I had it in I couldn't feel it when I would sit certain ways and while having sex. has anyone had this happen to them with the meriana?? I really want a baby so bad and its really stressful and disapointing that we keep trying and nothing so I am hoping and praying this is my month.. but good luck everyone TTC!!!