What Causes Delayed Periods And Frequent Urination?

I am 21 years old and I am trying to concieve and took my first round of clomid while i was still on my period last month. my cycle is usually 24 to 28 days and i am usually never late. I am two days late and have bloating, pressure from my naval to pelvic region, constipated at times, cervix is medium/high (usually is low when about to start cycle), have been urinating more frequently, and have been gassy. Is this more likely to be due to the clomid, or being pregnant?