hi there,crying or getting depressed about anything is never a solution to any problem. You have to approach your infertility
problem in a more methodical manner. First get your husband's semen tested and if that is within normal range then you should visit a gynecologist and get yourself evaluated. Your irregular period may be the clue to the problem and its to be investigated and treated if possible. Folvite
as such does not help in conceiving and is just a vitamin, but it does help in the proper development of the early fetus when you concieve. So no harm in taking those tablets but they will not help you concieve. Get profssional help for your problem and do not try to self treat.Take care and best of luck.