Period after giving birth...

So I had my little man 2 and a half months ago and happened to be one of the few unlucky people who start their periods right after giving birth regardless of breastfeeding and had my first period last month. Now I was supposed to start my period again a week ago but haven't and I know usually periods are all over the place after giving birth but I find this a little concerning as I'm sure is normal... It probably has to do with the fact my boyfriend and I have been sexually active but we always use condoms and I'm supposed to be getting Paragard next week. Has anyone else had any other experiences like this? Because I'm definitely not trying to have another baby anytime soon