38 weeks - sickness

Hi all.

Suffered with HG throughout pregnancy and have been on tabs for it which I managed to come off around 32 weeks... was sick again this morning for the first time in months and woke up with an awful headache, feel very queasy, burning sensation under ribs, very very active baby, and the odd pain in back. I lost part of my mucus plug already a week or so ago, I just feel very strange... ??? Could something be starting or am I just experiencing normal pregnancy pains lol x