Sick and worried?

I ended up getting this nasty sinus infection right after i got done taking my iron pills from my birth control, this period I had with it was weird, it just wasn’t like my past ones. I’ve been on and off being nauseous and this morning i woke up with such sore breasts that it hurt even walking down my stairs. I am in a relationship where we are sexual active. Should this be a cause for concern or do I just have a nasty bug?