I had an ischemic big toe due to narrowing of the artery behind my right knee and was scheduled to have an angioplasty. When I went for the operation, the surgeon decided that the pulse in my foot was strong enough to warrant staying on the medication and being monitored in 6 months. I had been taking he combination from 25th March and I asked if I should still be using the Dalteparin and was told to stop. I stoped on the 16th and since then have had a constant headache and stomach upsets. Is this normal or should I contact my GP?