Frequent urination - pregnancy symptom?

I know that frequent urination is a sign of pregnancy. The thing is i been ttc for 3 years now and am going on Clomid in 3 months as am not sure if i ovulate. For the last 3 days, but definately more today, i been peeing ALOT. Like yesterday i was going like 2/3 times in an hour. But today, omg, i must have been to the toilet like 20 odd times. I am going every 15 minutes. It's not an infection or anything like that cos i ma not sore or there is no burning sensation etc. I am really unsure to take a test a test or not, the last period i had was like 2 months ago, i very rarely have periods. When you were pregnant, was frequent urination this bad and what do you think my chances are? I may just be clutching at straws here, but i definately do have frequent urination. Also today, i just cant seem to eat enough, i have eaten soooo much, meals etc and am trying to eat healthily so i have been munching on fruit, rice cakes , veg etc but am still hungry. Also today at the back of my throat i feel a bit nauseated. What do you think? Really don't know to take a test or not, i really don't want to waste money on another BFN :( xXx