I'm a little over 21 weeks and the past week I've felt this weird feeling like 3 times. It just started this week and it's usually when I lay down to go to bed. I feel this pressure around my pantyline, very low and it moves up to around my belly button and I feel my stomach getting tight. You can actually feel my stomach tighter, then it goes away. It doesn't hurt. Just feels weird. I feel like I'm too early to be experiencing Braxton hicks. Could it be anything else?