Am I over thinking it???

This is going to be long lol

I'm 5.5 months ppd and I'm exclusively breastfeeding my LO. Before conceiving I was irregular and since giving birth I've had three periods bit they're not on track. I've never had period symptoms it always just started with a little cramping. So I'm 8 days late on my period which I wasn't concerned about but for the last week and a half I've had congestion, mucus, stuffy nose, and acne. Which I had my whole first pregnancy. I've had sudden urges to use the bathroom that ended in me peeing my pants and I've been kind of emotional. I swear my breast just got heavier! I tested yesterday and it was negative but I've been reading how breastfeeding can make a delayed positive. What do you think?