Constant worry!

Okay so stressful week in work. Start of the week baby is moving fine and bouncing about my belly. I can always say 7 morning then after my tea at night he is most active. And then today and yesterday I am feeling only a little movement and I mean like only small wooshes... No proper kicks like he has been doing (25+2 btw) . I've tried chocolate and cold drinks to get him moving . Ifeel he may be quite low in my pelvis maybe or kicking my placenta ? How long should I keep track? Trying not to panic and have to go A&e ....