I'm so sorry!! It is very unlikely for the cyst to affect your pregnancy. I had a miscarriage too and I didn't have a cyst then. Things just happen I guess.
It is very possible to conceive with cyst. My gynae found one in me after my miscarriage, but it's gone now that I'm pregnant. I have a friend with polycystic ovary syndrome who also manage to conceive her two kids naturally. =)