Hi abby,
And welcome to the wonderful life of TSM. I have been on nal. since May 8, and I finally had a planned af day 3 in a row. The only other time I could do one is when I had a nal. over, and once you have one of those you will understand why I was af. Do not rush it. If you try and feel like you are white knuckling it you are not ready. Continue with what you are doing and try at a later date.
Since you are only 3 weeks in you may be in the honeymoon period, which mean TSM will work for you, but it can also mean that you intake can increase so be aware of it and do not worry it just happens.
for UK units
https://www.drinkaware.co.uk/understand ... calculatorfor US
http://www.moderatedrinking.com/self_mo ... ing_track2there are also apps you can put on your smart phone you can find
keep posting for we love to read others progress and we really care
Jaba