Weird Cramping, And strange period

My boyfriend and I had unprotected-sex on June 26 and I got my period June 22. I usually have a 28 day cycle and on that fourth day I had my period but I had used a tampon. My boyfriend wanted to have sex while I was on my period since I thought "you can't get pregnant on your period". But yet we used the pull out method and he didn't came inside of me. But at the time before we had sex, he had already ejaculated (not inside of me) but he didn't "pee" and then 30 min after we had sex. On that day I had kinda lost my period. The next Sunday morning my period was light, kinda like if I was spotting. Ever since then I have been getting light cramps, not like my period cramps, but a little pain. And as of what I know, that woman usually ovulate the 14 day since their period. I don't know if I might be pregnant, because I mean my boyfriend didn't came inside of me, but I don't know about his precum? And I usually have my period for 7 days, but its my first time I had a 4 day period. I don't know either if it was because I put a tampon, and it kinda made my period stop.

Also we had sex yesterday, and used a condom and yesterday night I had the cramps again. I took Motrin and it kinda left. the cramping is more like an uncomfortableness it hurts kinda, but its more like I'm uncomfortable. What are the cramps for am I ovulating now, or is it something else, or am I pregnant? :/ help!