emerald It could be possible that you get positive OPKs without ovulating - as far as I know, OPKs measure the amount of luteinising hormone (LH), whereas the temperature shift is caused by the rise in progesterone... I guess that looking at progesterone is more reliable, since this is also what they measure when taking your bloods to check if you are ovulating. Have you considered temping? Alternatively, ask your GP to test your bloods for progesterone, it's a standard and easy test that GPs usually are happy to do.
flen Good luck!
I'm also a non-pincher when injecting heparin, as I found that I get even worse bruises when I do that. Tbh, these days, I just ram the needle in wherever I can, as I now have a lovely line of bruises of all sizes and colours across my lower abdomen 