Hi everyone,
I wormed and flea'd one of my cats around 3/4 days ago(both products being natural ) around 2 days ago i found one worm on his tail. The next day he seemed a little quiet, but he is a VERY friendly laid back cat anyway. Last night he was not laying down in his usual VERY stretched out position

and looked a little uncomfy, so i went over and straight away could see something was bothering him, i felt him all over and he growled, meowed and even hissed at one point

at first i thought it was his leg that was bothering him, but he has been asleep all last night(except he woke up at around 5am like he normally does, he normally lets me know he needs the toilet and i let him out, but i got up to find he had been for a wee in the house

something he has NEVER done) and day, he has gotten up to eat and drink a couple of times, his stomach has bloated right up tonight and i can see he is quite distressed. If he hasn't improved hes off to vets ASAP.
Im just hoping its nothing serious and wondered if anyone had any ideas on what it could be?
Im hoping and guessing that he has had a big parasite infestation and the products are shoving it all out at once...but he hasnt been for a number 2 yet..so im wondering if this is all it could be?