I would recommend speaking to an immigration attorney before you travel. Based on your question, it sounds like you are no longer in H-4 status (since you said you had an H-4 earlier and your husband - who I assume had an H-1B - is already an LPR). You also do not mention whether you have a current advance parole travel document. After your biometrics appointment is completed, it typically takes at least a month to receive the Lawful Permanent Resident card in the mail - and if an interview or additional evidence is required, it would likely be longer. If you travel before your case is approved but without advance parole, you will abandon your application for adjustment of status.
Elizabeth Rompf Bruen
Scott D. Pollock & Associates
105 W. Madison Street, Suite 2200
Chicago, IL 60602
(312) 444-1940 (phone)
(312) 444-1950 (fax)
The short answer is yes as long as your H4 status is still valid you can go back to India but not for an extended period of time (6 months continuous, etc.). If your fingerprints do not "go ok", as you put it, then you could be in some amount of hot water.