Sore and itchy boobies 😩😩😩

Hi everyone, so for the past week or so my boobs have been itching like crazy! At first I thought I used too much laundry detergent but I haven't wore the bra in a week and they still itch! I don't have any symptoms of pregnancy but I'm getting a little nervous from what I've read on the Internet! I have a 10 year old son and another pregnancy that failed (ectopic) and I'm really freaking out because I don't want to go through that again! I only have one tube and I don't think I'm very fertile. It's too early for a missed period and I'm curious if anyone else has gone through this. Please shed some light on this!!