Advice needed after a Chemical Pregnancy - next step?

So, I had a positive at home pregnancy test on 4/18 and every day after the line got fainted and fainter until it was non-existent. This was my first BFP ever. Very upsetting. 
I started my period (I think that's what this is...) one day late on 4/22. I called my doctor who has been zero help. No labs, advice, office visit or anything... but that's another story. (I'm finding a new one) I've self-diagnosed a chemical pregnancy based on what I've read online. 
Anyways, where do I go from here? What should I expect? Is it ok to start trying again right away? Do I have a greater or decreased chance of getting pregnant if we try again right away? Any advice is appreciated.