Just a sack

Ja

Today I was went into my local gyn to confirm my pregnancy.. I wasn’t really keep track of my periods so this pregnancy was definitely a surprise… long story short doctors couldn’t tell me how many weeks I am because she only saw a sac… she thinks I’m maybe 4 or 5 weeks.. she order blood work to check my level and wants me to return back on Monday for more blood work, not to mention she stated I have blood in my left ovary but is completely normal and will

Go away on its own throughout my pregnancy… also this will be my second pregnancy however I’ve been experiencing sharp pain under my chest (if that makes sense) I explain to the doctor the pain & she just order Nausea pain medication, I don’t have no symptoms at all except for the pain like in my rib cage.. should I be worried or relax because it still early in my pregnancy ?