pain at the top of uterus/top of abdomen...

I'm really tender at the top right where my belly starts to go out/where my uterus is. It feels bruised and hurts just by pressing fingers down on it (realized in the shower while washing and after when applying lotion) I don't have tenderness anywhere else but I seriously feel like I may be bruised internally or something because no bruise shows on the outside but idk! I'm 30 weeks... should be I be worried?