My left boob hurts so much especially when i remove my bra. I am trying a warm compress like a warm…

My left boob hurts so much especially when i remove my bra. I am trying a warm compress like a warm washcloth but of course it doesn't stay warm for long. what else can i do? i see my ob on Wednesday so I will talk to her about this. also I have been getting ridiculous headaches. i know they are common in early pregnancy but nothing seems to help.