Anyone else?

Yesterday had some good cramping backache bloating felt really funny twinging in the pelvis at 6pmish got very light brownish discharge when I went to the toilet thought it was AF so put a liner on. I have it today still very light only when I wipe. Still have a liner on but nothing. Dull backache and twinging/slight pain in the pelvis. Periods due in 3 days. Hot I haven't missed out this month.