help ladies

hello ladies my husband and I just starting ttc. on January 1st of this year my last period was on Nov 27th and ended Dec 3rd I have not gotten a period since than and now it is Jan 5th and still no period mind you I just started to have irregular periods. I feel as if like my period is coming I was having light brown discharge the other day and my lower back has been killing me and today I had watery clear like discharge and stains white on pantys can anyone tell me what could this mean?