Advice please ladies

I’m ttc with my hubby. I feel different this month I’ve had sore heavy boobs which started about 4 dpo and felt a bit better after around 10days I had some darkening of my nipples had lots of milky dc when I would normally be dry before my period. I’m due on Tuesday and I started “spotting” yesterday (3 days before my period is due) it’s a thick mucus streaked with brown/pink and some bright red spots occasionally. It started with some cramping which only lasted one day. Still have the mucus today but no cramps. My periods are normally very painful and on time. Is this IB? Am I pregnant? When do I test? Thanks D

Update also vomited now 🤔 test in the morning?