With metformin, you are unlikely to have a hypo, as metformin does not reduce Blood sugers like other meds do. Metformin has several side effects, worth having a look on the info leaflet that comes with them. Unfortunately I have been on metformin too long to remember the side effects and don't have the slip of paper with the side effects on.
Others far more experianced will be able to say more as I must admit I now consider myself a newbie again as every thing has changed since I was diagnosed.
This seams to be a common theme as your type 2 you don't need to test. Without testing how are we meant to know how we can control whats going on with us. I gave in to the docs several years ago and did not test, now I am on extra meds and trying to get back to sensable readings.
Following their advice I was only testing and around xmas was feeling a bit rough which lead me to check again, I got a big shock, I posted a graph of my results in this thread
viewtopic.php?f=42&t=38042 . This now gets me a bit mad when I see they are telling others not to test, if I followed my origional plan I would of picked it up a lot earlier that my sugars were going high.
One thing I would do is ring one of the meter suppliers like abbott medisense, bayer, lifescan etc as they will normally send you a meter free of charge and by return of post, if you fill in the on line resuests thes seam to take a while to come through.
These meters normally come with 10 strips so you can get the feel of the meter, test yourself first thing in the morning (fasting) then again 2 hours after a meal. This is a good starting point, if your doctor won't give you a perscription for repeat strips as they are around £25 + for 50 strips. There a a couple of meters that use low cost strips which are around £6 to £8-50 for 50 strips and for 200 lancets are around £4-50.
These meters are the SD code free and the supercheck2, the supercheck has a advantage that it talks to you (can be turned off).