My inr range is 3-4. since last Tuesday my inr has been too low. It's was 2.2 last Tuesday and I increased warfarin. It went back up but this week its gone to 2.2 Monday then 2.6 Tuesday Wednesday Thursday then 2.9 last night. I have taken 10mg daily for 5 days to try and get it back up but it has gone down to 2.7 don't know what to do as already taking the loading dose and clexane. I'm away from my clinic so can't just pop in any advice?