Confused...

Ok so I have very irregular periods. I had a mc in early October and had my first cycle November 30th and nothing. Today I have brown discharge  and nothing else. Is this my period? We have been trying since oct 2012 and got preg in sept 2013 and mc in oct 2013. We so want to be pregnant! It took 2 years to get pregnant the first time and then a year the second but didn't last. Glow said I was to to be on my period 27th and nothing... Advise?