confused and really worried, help.

🌻Ivy • 24, married, SAHM to a rainbow c-section baby and cat, avid photographer, animal lover, "nerdy"🎃☕📷🐾👪💜🌈

I gave birth about 9 months ago and last month I had my 1st period. so I don't know how it's going to work but according to this app I should have started 2 days ago, so I'm worried. I don't want to have another kid right now. I know that I should wait alittle while longer to get a test but I've been having some symptoms, tired, nausea, headaches, starving (but I'm also breastfeeding), slight cramping/stabbing pain. I'm terrified that I am, I wanted to wait 5 years to enjoy my first born, I just want to know if anyone has been through the same thing?