Late and Symptomatic

Hi ladies. I've been reading a lot of posts lately regarding late periods and negative pregnancy tests, so I thought maybe you all could give me some advise. I stopped taking my birth control in August of 2017. my husband and I have been trying to conceive since. My periods have fluctuated a day or two since I went off the pill. 4 days before I was expecting my period to arrive, I had some odd brownish discharge that occurred like spotting for 3 days. My period never came. I took a hpt a week after my late period that resulted in a negative. I took one again this morning and again it was negative. I've been feeling nauseous, I have pimple-like bumps around my nipples (on the areolas), I've been very tired, and a bit moody. Could I still be pregnant? What would you reccomend that I do? I apologize for the wordiness and Thank you for any advise.