Having abortion thrice is safe for future?

Generally, yes.: While we can never predict the future, most women are able to conceive after having had three abortions. This may not be the case, of course, if there were complications associated with the procedure, such as infection (unlikely) or damage to organs (extremely unlikely). Best advice, of course, is to get pregnant when you are truly ready to welcome a child into your life. Easily said. Good luck.