I'm sorry to hear you've been having abnormal periods for a year. Since you're having very heavy bleeding and you're concerned that "something is seriously wrong" with you, I would strongly encourage you to see your doctor and get some expert advice.
Please let us know what you find out once you've seen your doctor,
Hello r24gu and thanks for posting for your friend. Now that your friend has been trying for over a year, she may want to consult a fertility expert.
Also, you don't mention that her husband has been checked out. Anywhere from 30-40% of the fertility issues are Male Related . So it's possible it's not a problem with her friend at all, but her husband.
Dear newlife27, hello and thank you for posting this! You'll be interested in this article, Improve Your Chances of Getting Pregnant . Among other things, it says "In one study published in the journal Fertility and Sterility, doctors found that men who stopped smoking experienced a rise in sperm count of up to 800%!"