Hello,
Ye it would make a difference, basically because while you've been on pill the only reason you have a period is for 7 days you're not giving your body the usual dose or hormones in the pilll, and so you have a bleed. It's not classed as a true period by the doctors.
I came off on the 19th August after 8 days on a pack. I had a bleed for about 3 days that was a light period. Now, I've still not had a proper period but I know I am ovulating (won't go in to the gory details on this post!) so looks like I am "in business!"
Start taking folic acid as soon as you stop taking the pill, and if you haven't already, get an app on your phone called Ovia. It's free and really helps you understand what is going on!
Shellbell There's a few things, now you've come off the pill, your periods won't come when they used to. The pill was keeping them regular as clockwork, but you don't take that anymore. Unless you ovulated between stopping the pill and now it's unlikely (I think) that you could be pregnant yet. (To track ovulating, people on here take their BBT (Basal Body Temperature), or chart their cervix position and CM- look in to these. I do the latter two).
Plus, the earliest you can really test is the 1st day of the missed period (unless you get an early response doo dah).
I am planning on I DTD every 2 days, and testing once a month.