I had unprotected sex on the 8th day of my cycle my boyfriend ejaculated in the all the way. The following week I had light spotting followed by a yeast infection. Two weeks later Ihad sore breast Lower back aches. My next period came a week and some days late. Started heavy brown for a couple hours than light brown a week pasted and I'm still on my period now its starting heavy red. Plus lastweek I started feeling nausea on and off not enough to vomitand slight pain in my left lower side on stomach when I press it. Please help. And my back no longer hurt.