Pregnant while breastfeeding and have no idea when I conceived

I’m spiraling right now and am I’m complete disbelief. My baby turned 6 months old this month and I just found out I’m pregnant again. My period isn’t even due for another 2 weeks, the only reason I took a test this morning is because looking back I realized my last “period” was only 2 days long. I just assumed it was due to breastfeeding but have had a weird feeling lately and sure enough the test immediately came up positive. How far along could I be by just a ball park guess ? I know I obviously won’t know for sure until I see my doctor but I’m just freaking out and trying to guess when this most likely could have happened

February👇🏻

March👇🏻

April👇🏻