Stopping the pill mid pack

Ok so in January I stopped my pill pack about a week and half in dont remember the exact date(and I have been missing pills but making them up) but my last placebo week was Dec 14th I was having sex with my husband the entire time no protection the last time we had sex was the 24th of January. I have not had sex then, I got my withdrawal bleed on the 29th it was mainly spotting for 3 days. Now about 3 weeks after my withdrawal bleed I'm having orange spotting (the only times i have seen this color blood is with my miscarriages) it's not a normal period I took a hpt yesterday it was negative. Kinda seems like a chemical pregnancy because I had symptoms but the only one that's still around is the nausea oh and peeing. What are your opinions? Please coment.