I Feel Like I'm Miscarrying But I Didn't Know I Was Pregnant

Capri
Ok So I Haven't Had A Period In 2 Months At All I've Been Nauseaous Dizzy Extremely Sick And I've Gain A Lot Of Weight My Belly Even Got Strangely Round I've Took Pregnancy Test After Pregnancy Test With One Positive Result  Off Of A First Response Test & The Rest Negative I Was Also Tested On The 21st At My Doctor With Urine Which Was Negative But    Monday Tuesday & Wensday I Was In Extreme Pain I Couldn't Eat Drink I Could Barely Stand I Was Extremely Lightheaded Dizzy Having Severe Cramps On My Belly At 530 In The Morning Thursday I Had A Very Very Bad Cramp That Lasted A Very Long Time & I Went To The Bathroom & I Was Bleeding Not Like A Period But Clots From That Point On I've Had Heavy Heavy Bleeding 2 PasFill zip In Less Than 10 Mins Stomach Still Cramping Up To The Point I Have To Be Still & I Just Used The Restroom  & When I Wiped There Was Pink Clear Mucus With Blood & After It Was A Bloody Form On The Tissue Does This Sound Like An Eatly Miscarriage ?? Help Me