I guess I'm out. yet again...

one app says I'm 7 days late (Glow) and eve says I'm only 2 days. my periods have been irregular for 6 or 7 months. I'm also still breastfeeding. we've been trying for 7-8 months. Some months it's a 29 day cycle, some times it's 45. I thought for sure i would be postivie... so so so tired, heavy creamy cm, sore tender breasts and nipples, bloating, SO much nausea... but BFN.