New birth control

I started on my birth control last month. I got my period, finished the pack, and started my new pack before my period was over, even thought I was done with the pack for that month.

I’m done with one week of the pack I’m on now, and my boobs are SUPER TENDER. It comes and goes, though. No nipple pain or discharge.

I am sexually active, but we always use condoms and I always give him oral to finish him off. I don’t think I’m pregnant, I just want to know if this is normal? For my boobs to be sore when adjusting to new Bc?