Can anyone help

I have a question... If anyone could help I would really appreciate it. My husband and I are trying to conceive and so far no luck, I had my period the beginning of this month so I was sad cuz that meant no baby but we kept at it over my ovulation time. We didn't have sex the past 2 days but we did tonight and I had a lot of pain down around where my uterus is. Pain like I've never felt before. Any ideas what it could be? I'm kinda scared cuz I have no idea. I'm going to call my lady parts doctor tomorrow when they open but I'm so worried I'm shaking and my husband is upset cuz I don't know what's wrong. Please help if you can.