TTC after nexplannon removal, irregular bleeding all month.. help?

Hi so I'm new to glow. Was wondering if anyone can give me some advice.

I've just came off my nexplannon as me and my SO have decided to try for a baby.

I got nexplannon removed on the 30/04 and started bleeding the next day and I've been on and off the last month.

I did do an ovulation test throughout the month and I did get a possitive surge around the 22nd. Almost like I missed it by a day or two.

I'm so confused. Any advice would be helpful also has anyone had a BFP relatively quick after getting it out and when will my cycle be back to normal?