When can you start trying again?

Kristy
Friday I had numerous positive test, called Dr for blood test which I'll get th e results today...however sunday am at 3 I woke up with cranpa, by 4 waa spotting and by 630 passed a fairly large clump of tissue. I understand the pregnanxy is gone and basically it's like I have my period now. .. my question th ough is... if I hadn't taken an early response early test in would've NEVER known I was pregant... a friend said I have to waot a cycle which would stsrt me in November BUT like I said I would've just thought this was my period and moved on to next ovualtion....what do you think????