Breastfeeding moms

Did any of y’all have a really irregular period at 11 months pp because I could go bleeding for 2 weeks spotting for 1 week and every time I have sex I bleed .. They did checked me and said I don’t have an infection or anything but it really worries me . All they said was that I’m bleeding from my cervix . They told me to come back in 2 months if it’s still happening I’m so scared it’s something serious like cervical cancer or something 😢😢 my anxiety is just going through the roof💔