Doctors are willing to test and talk with you after you have been "trying" to get pregnant for a year without success. Most of them will not talk with you before that.
Then they start testing. Are your periods regular? Taking Charge (already mentioned) shows you how to map your periods and ovulation-that information should be VERY helpful to show a doctor.
Glulcophage is used for people with PCOS (polycystic ovarian syndrome), so you would want to be diagnosed before using it. Clomid is more of a basic fertility drug. I took Letrozole which is "a step down from clomid". When taking these drugs, risk of multiples goes up (we got twins). Keep that in mind.
Yes you should talk with him. These drugs and medications can effect your moods and you want him with you all the way.
I would start with "now that it's been a year, I'd like to talk to my ob/gyn"... Often they will refer (at some point) to a reproductive endocrinologist (fertility hormones) doctor.
Sorry so long, but I think this detail is helpful.
Trying to get pregnant is frustrating, I'm sorry you have to go through it. Good luck!!!