Hello all!

My story....
I am the proud Mommy of a 4 1/2 year old son. I had no trouble conceiving him, but he was a preemie (2 months early due to HELLP syndrome). After we had such an ordeal with his birth we decided no more kids.
In 2006 I got a surprise pregnancy while on the pill. I was scared, but as time went on we ended up being thrilled at the thought of another baby! At 13 weeks I had an mc. Had a dnc with no testing............just trusted that it was God's will.
We got pregnant again in 2007...mc at 4 weeks. Pregnant in 2008....ended up being a chemical pregnancy.
Now here we are...............we have become very focused on getting pregnant again, but are not having any luck ( the last pregnancy was in April 08).
I am ovulating. I have not been on pill/ring/anything since 2006. We are just really scratching our heads on this.
I am new to the board. Looking for advice............any tips or suggestions would be greatly appreciated. Best wishes to you all also!