If you had an IUD inserted after giving birth, did your provider have you call the office to get it inserted during your period or could you schedule it for a certain amount of time post-partum (say 6-8 weeks)?

With my first, they scheduled it for 8 weeks post partum. We moved and now I have a different OB, this office wants me to call when I get my period for the first time. I EBF my first so who knows when I would have gotten my period but this time we are exclusively formula feeding. I've had some spotting over the weekend but nothing that feels like a full blown period. What would you do? I hate not being on birth control!

ETA: we are using condoms as BC right now but I'm a level 5 worrier about birth control and do not want to get pregnant again right now!