Help!

I had my period three weeks ago (it lasted for two weeks, not always heavy) and then I started again two weeks after that 10/9/14 - 10/14/14. I've been off BC since the end of August and we are looking to conceive our second child. What is going on with my body? I keep having this fear that we won't be able to have another baby and I don't know what to make of all this.