Please...

It's been about 7 days sense we had sex for the first time this cycle. We had it on my period and right after. Off and on every other day. I'm starting to cramp, and had a little spotting. How soon can I test. I'm on day 9 of my cycle currently. I've heard that lots of woman have gotten pregnant from sex right after a period and maybe it'll do the trick. Fingers crossed.