Im 8 days late having pregnancy symptoms but am getting cold shivers then hot and sweats in the night 2 negative tests but one test did look very very faint pos. any ideas?

Some women do get night sweats in early pregnancy due to the hormonal changes, so it is possible. However, there could be other causes so it might be a good idea to check with your doctor. Usually, any sort of line is regarded as a positive, although sometimes the part of the test where the positive result would be can cast a faint shadow and appear as a positive line when it is not.