I have been taking Dayquil for two days and last night and today have been suffering sever cramps in the stomach, yesterday I took anti-acids/gas pills which after 2 hours of laying vertical helped, but didn't associate it with dayquil, today after taking my dose at 7am, it started up again, and i have been getting very bad pains for nearly 5 hours. i will stop the medicine now, but do you think this is the cause and what can i take now to help that tummy pain? thank you