Could use advice regarding pregnancy and miscarriage.

I experienced a miscarriage between 5 and 6 weeks. My doctor told me we can start trying again as soon as I’m done bleeding. At the last blood draw they did to check my HCG levels, I asked if they could check other things in my blood like other hormones to make sure I can carry a healthy pregnancy. Since it was my first, my doctor is really trying to not do any testing. I know there’s a big chance I miscarried for no reason, I’m just s afraid to try again when I don’t know if I’m okay. Is there a way I can push this more? Or am I just being crazy? Also, did anyone get pregnant right after a miscarriage? I want to try again, but I’m so afraid.