How far along?

Krista
My husband & I decided we would start trying on our honeymoon this past October :) we were married oct. 4th, I started my period oct 7th then started back on my pill the 11th. The 19th(oct) is when we decided we we're ready to go off the pill. I had spotting/a little heavier spotting on the 23rd-25th(oct) it was on & off & very random....could that have been implantation bleeding? About a little over aceeek ago we got our very exciting positive! I know you're told to count back to the first day of your last period but I'm unsure if that's accurate for us since I was on the pill for one week after that? I'm calling to schedule our first appt but just curious what you girls think :)