So I'm 6 months postpartum. I pumped until my son was 3 weeks old, formula fed him from then on. I've been having a regular period for 3 months but now I'm 7 days late! We're not trying but we're not being careful. I've had 3 negative pregnancy tests but still no period. This morning I woke up and my breasts are much larger than before and I'm nauseous. I did have a tiny bit of spotting at 21 days into my cycle. Could I be pregnant? Or just still bouncing back from birth? Sorry for the long post