Good sign?

AF isn't due until the 20th of June and ever since my period ended like month I've had sex every day or every other day, my boobs are sore and I've been extremely tired lately. I don't know when or if I've ovulated I've never been good at keeping up with it or knowing how to keep up with it. Is sore boobs and tiredness maybe a good sign since my af isn't due for another 2-3 weeks? My and my SO have been tiring for a baby since our miscarriage in December..