2 days before AF due...can I test?

I am due for AF in 2 days, and usually I have some kind of cramping beforehand, but I haven't felt it yet. Sorry for being gross but I've had a lot of BM's today and a slightly nervous feeling very low in my stomach, like on the pubic line. I've been TTC since the end of March. Could I be pregnant? Can I test today? I bought first response and clear blue digital tests. I've had sex every day of my fertile week for the past few months and the majority of the month nightly, but so far haven't been successful. I'm hoping for a BFP like yesterday!!