Dreams about pregnancy can often symbolize new beginnings, creativity, or the development of an idea or project. In your case, feeling pregnant unexpectedly and expressing worries to your mother might indicate that you are grappling with responsibilities or pressures in your waking life that you feel unprepared for. The fact that you didn't want the baby suggests a reluctance or fear about these new responsibilities.

Walking naked through a crowded church can represent vulnerability and exposure, perhaps highlighting feelings of judgment or insecurity about your situation. Churches often symbolize community, spirituality, or a place of refuge, so being in that setting while feeling exposed may reflect concerns about how others perceive you or your choices.

Finally, arriving at a hospital bed signifies a desire for comfort or relief in a situation that feels overwhelming. It may indicate a need to seek help or support from others as you navigate these feelings.

Overall, this dream suggests you may be facing significant changes or pressures in your life that you feel unprepared for. It could be beneficial to explore these feelings further and consider what new responsibilities or situations you might be resisting. Seeking support from loved ones may also help ease your concerns.