Pregnancy after a miscarriage

Hi all,
I found out we were pregnant two days before my period. I was spotting a couple of days prior and up until I miscarried at 5 1/2 weeks. I was told that spotting is normal, but I just knew that we were going to miscarry. The ob did blood tests every two days or so. My first reading was a 7 then 23 then 50 then 80 and the morning of the miscarriage it was a 54. I was never told why they were doing all those blood tests and when the ob told me we were having a miscarriage I got upset and started to cry. The doctor then told me he was going to step out of the room because I was too emotional. Needless to say I left very upset and the ob told me nothing about what to expect or made an apt. for a check up. So I called up my primary doctor and made an apt for a check up. Is this normal practice?

Anyways, I bled for a week like a regular period and I just ovulated this weekend. We were told we could try right away and we did this weekend!
I am so worried that we will have another miscarriage, I hate being this anxious! I am now being overly cautious, taking almost extreme precautions just incase we could get pregnant again.
I know that we miscarried early, but I've wanted to be pregnant for a while now and we were sooo happy and while I was uncomfortable (I had early symptoms) i woke up every morning feeling my uterus stretch and my boobs hurt.
Is there anything I can do?