Not sure if this is normal or anyone experienced this

Ashley
My husband and I got intimate late last night, which is hard since it's uncomfortable in all positions really and my stomach being so big it can be hard to breathe. I always go to the bathroom after and not to be gross heard a plop in the toilet which startled me. I saw a whitish blob that was perfectly round like a marble at the bottom of the toilet and yelled for my husband to look at it. He was convinced it was toilet paper lol though it was the size of a quarter and it happened before I even wiped. I never had that before during sex EVER. My doctor isn't concerned but wondering if anyone has had this or if you have what could it be? Being pregnant such weird and gross things occur that are so foreign to almost all of us. So coming here  sometimes I get answers and feel normal. 😀