Confused?!?!

Hey y’all! I stopped taking my Bc pill around the beginning of December after about 2.5 years of being on it. (My boyfriend and I decided we want a little one.) I had a period December 4-8. Then December 23-25 I had light brown spotting. I’ve had cramping, sore breasts and back pain and heartburn constantly. Im now 6 days late for my period and I have a negative blood test and a couple negative hpt and a positive hpt. I’m just confused. I’m thinking maybe it’s my body adjusting?! What do y’all think?