Why am I experiences these symptoms?

I came off my period 3/3 and had sex 3/5-3/15, but came back on my period later that night 3/15-3/20. I had sex from 3/26-3/30. Since 3/14 I started feeling tired, and having lower back aches, light cramping, feeling thirsty, light headaches, feeling hot then I go back to normal then back to hot, bloated, moody, and using the bathroom more than I use too. Since 3/29 I started getting pains in my breast and my nipples have been sticking out but get hard here and there. I already have big breast so I cant tell if they have changed much and Im use to my breast being tender from time to time but not having pains. I went to the emergency on 3/19 and they checked me and said that nothing was wrong with me. I thought that it was from my period that had came on but these symptoms have not went away since 3/15. I normally get bad cramps and have long periods and this happens a day before my period and then go by the 3rd day of my period. For the past few days I’ve been having a white creamy discharge.I have never felt like this before. I’m wondering if this is early symptoms of my period. This is weird. I have irregular periods so Im waiting to see if it comes back on 4/20 which would mean that it’s back on track.