please please please help!!!!

A couple days ago i started to bleed heavily & feel nauseous but this feeling of nausea & back pain has been going on for a couple days i thought it was just cause i was going through a rough patch in my mental state and i didn't feel like eating so i didn't eat or hadn't been sleeping much but like i said i started to bleed HEAVILY. at first it was normal red but then yesterday when i was at my boyfriends grandmothers house (meeting her for the first time and everything) the blood got dark and not as wet more like discharge-y and i went to pee and change my pad when i felt & saw a big blob fall into the toilet.. it was like a ball like a lemon sized ball & i was worried but didn't think anything of it until i realized that it might have been a miscarriage. i shook it off thinking maybe i'm just overthinking it but after allat the bleeding slowed down & went back to it's normal red & just lil pieces of discharge. i'm very worried that i miscarried a baby i didn't even know that i had but also im ver confused because i still had a normal period a week before so i'm not sure i would like some advice from anyone please..

update- i went to the hospital and all they did was give me a pregnancy test and it came out negative & then referred me to a gyno so i don't know what that means i was expecting them to do more but they didn't so i'm still unsure of what it was.

also thank you to those who commented, my arms are wrapped around you in this difficult time sending you all my love.