A 23-year-old female with history of abortion 8 months back at 8 weeks missed her abortion 2 months back. She checked for pregnancy by kit method 4 times at a gap of 15 days which all are negative. She went for beta HCG one month back the value was 1.5 and now again she went for beta HCG for which the value is 7.8 now .

She gave history that when last time when she was pregnant the fetus was viable after 2 months only but before it was all negative. What to do next, should she go for scan ?