anyone feel like this?

last night I feels like I had a bunch of gas bubbles in my intestines. It was so painful I didn't get much sleep and today I still have like a cramping pain in my intestines when I stand up. it's not like period cramps, it's higher, but not my stomach high. I am about 6 days before my period. I feel so tired and weak from lack of sleep last night too. not sure if this could be a weird first pregnancy symptom or take some gas medicine or what...sorry if this is weird...never felt like this before.