What Are The Symptoms Of Potential Miscarriage?

Sir,my wife missed her period on 25 july(It happened last on 25 June).I've done pregnancy test(urine)in home & also inpresence of Doctor on 01 August'10,it was +ve.But she is facing pain in lower belly.I've done USG. reoport summary is given below,



*No intraurine POC noted.

*Small Lt. ovarian cyst.

Adv:Transvaginal sonography/Sr.Beta-HCG.

My question is whether she face miscarriage or not?

She was faced miscarriage on 8th April,10.

We have no baby.