Abdominal pain after methotrexate injection for ectopic pregnancy?

After my methotrexate injections (I had 2) I did suffer from extreme fatigue and continuing, mild abdominal pain with the occasional 'stabbing' pain. I felt SLIGHTLY nauseous but not too bad. My hcg levels did rise slightly on day 4 post-injection but this is not uncommon, apparently. The key indicator is the drop between day 4 and day 7 which is expected to be at least 15% and after that, a continuing downward trend. I didn't have any bleeding at all until 8 days after the injection and then it was very light and pink in colour.