The wait can be so difficult! I understand your situation. I agree I think the first test was a little too early. A seven-day wait could be too long, to be honest. Things should get clearer, either way, in a few days. Really hope it's a sticky BFP! Good luck, hun, keep the faith.
Cycles can be a little irregular, once you leave the pill. So, it's nothing to worry about. These things are quite common. It could still be a BFP! I really hope, for your sake, that it is! Best of luck for you! Keep us updated on how it goes!