Hello I Am 27 Years Old .i Have 4 And

hello i am 27 years old .i have 4 and half years girl child.she is fit and fine. but in last pregnancy my fetus was not developed and doctor says blighted ovum.and my gyno treated me with d&c. now after 2 normal period cycle.i want conceive baby .today my gyno gave me to take 1. doxycycline and lactic acid capsule 100 mg and ( multivitamin) roostum capsule.my question is that this treatment will help in conceiving and will this treatment will have side effects ?? And what else treatments are required ????