Really excited but scared please help

Soooooo Let me start by saying I'm pregnant 🤗🤗

Monday August 20th I had an

IUI

Monday Sept 3 I took 2 test got faints

Tuesday Sept 4 I went to get blood work and it was confirmed but low hsg levels later that morning I start spotting 😶 around 2 pm I started getting really heavy brownish discharge and cramps

around 4 pm I start vomiting so I went to the ER

They confirmed my levels were extremely low and may possibly be having a chemical pregnancy but there wasn't any visible bleeding

On Wednesday Sept 5 I started bleeding non stop and HEAVY I called the doctor they too said it must be a chemical pregnant and we can try again in a couple of months

I bleed heavy with Clots until Saturday morning 😟😔

By the time I was on a cruise work retreat and got drank so much because I was in my feelings and we had free drinks

As on today Sept. 10 I had more blood work and it confirmed my level increased and I am 5 weeks pregnant I took 2 home test and they also are positive

I was so excited but more upset I had sooo many alcoholic beverages

but I am more afraid because I Bled so much and so heavy they were sure I lost the baby please help can anyone help explain what happened???