UGH WHATS WRONG W/ME

My period was always spot on before I had my baby. She's 8 months now. My period was 5 days late last month and usually it lasts a whole 7 days but it ended in 4. My period is now 2 1/2 weeks late, my breasts feel super full and my emotions have been so crazy the last couple weeks. What is going on with me?!? 😩😩😩😩😩😩😩

Does this happen to anyone else ?!