Spotting

Autumn

I need some opinions

I’m 29 weeks and 2 days, 4 days ago I was spotting and I went to the hospital they told me they didn’t see anything to worry about so I went home, well today it started again and they want me to come back in and get examined, I don’t know what to think about this cause each time I spotted it was associated with cramping and feeling like I have to pee nonstop