Here is the NHS advice about quinnine ...
"Dear EmBlazes:
We asked toxicologists at the Food Standards Agency (FSA) about quinine in tonic water and here is their summary:
There is no official advice on the safety of quinine in tonic water in pregnancy, although the FSA recommends sticking to moderate consumption.
Quinine is available in 200g and 300g tablets for use medicinally as an antimalarial. Side effects, including uterine contractions, have been reported in women taking very high doses of quinine tablets, though the effect appears to be mild and quinine is considered to be safe for use in pregnancy as an anti-malaria drug.
Quinine in tonic water is at a much weaker level of approximately 80 mg quinine hydrochloride/L. The safety of quinine as a flavouring in soft drinks has been evaluated by independent expert committees including the WHO and they have concluded that it is safe to use at current levels up to a maximum of 100mg/L. The lowest level of intake at which an adverse effect was observed was an effect on eyesight at 120 mg/day which is equivalent to approximately 1.5 L tonic water.
Hope that helps,
Kathryn Bingham, NHS Choices editor"
From: www.nhs.uk/conditions/pregnancy-and-baby/pages/foods-to-avoid-pregnant.aspx?tabname=Pregnancy#close
It is always best to take advice specific to the country you are in: vague advice on quinine doesn't take dose into account (an issue with all herbs/natural drugs and Dr Google) and the make-up of drinks and foods plus their storage really does vary country to country.
Basically you're fine to drink a glass or two a day! Just not a whole litre bottle!
I have found stretching by putting one leg behind, toes on the ground and bringing my heel down (so the stretch is in the back of the calf) before bed helps. Also sleeping with knees gently bent.
I drink quite a lot of milk at the moment, and feel this helps too.