Tmi sorry.

During I guess if I was pregnant (3weeks) did anyone feel severe constipation because every morning I use the restroom & the day before yesterday I went just fine & then bam in the afternoon I felt really bad pelvic pain & I had to use the restroom I summed it up as being gas but after the gas had passed I just could not & still haven't used the restroom! The pain isn't as bad but it's still there. I feel like I have to go but it's really really hard to. I was just wondering could this be a symptom. TTC baby #1