Pregnant and confused and worried!!

confused and scared!!

Hi im Naomi im 23 years old, i found out i was pregnant last friday..it was unexpected as i had split with boyfriend. i used the clear blue test and it said i had concieved 1-2 weeks ago, on sunday i was in very bad cramps and light bleeding so i ended up in hospital for tests. i had a scan which showed nothin as it could be 2 early, but my bloods had been repeated in 2 days and they said my hormone levels are low, they had gone up but not to what they expect it to. im so scared and feel so alone...