Tender breast

For a few weeks now my boob has felt really tender. Its my left boob sort of towards my armpit. It hurts if I press on it. At first I thought it was from bras but I either wear soft wireless bras or no bra at all and nothing has changed. I googled and breast tenderness is common but its been there a while now. 🤷‍♀️

Anyone know what it could be? It's so hard to see a doctor and you usually have to wait three weeks to get an appointment so I cba unless its urgent.