help!

I use glow and eve. glow said my period was due 2 days ago and eve says I'm not due for another 3 days 🤦‍♀️ I tested this morning because I have been so so tired and my boobs are incredibly swollen and tender (I'm breastfeeding and usually before my period my supply tanks... not increases!). we've been. ttc for 5 almost 6 months now. either way, I tested NEGATIVE this morning. when should I retest? Is it possible I tested too early since eve says I'm not even due for 3 more days? with my daughter I didn't test postivie until I was late for 4 days