Pregnancy Belly at 22 Weeks

Ka

This is my second pregnancy and it been a while since my first so I don’t remember what is normal. Recently I’ve been experiencing Braxton Hicks which I know is normal but my belly all evening and in the middle of the night just felt tight and heavy. Is that normal? I’m concerned because I’m also very tired which could be causing the Hicks but idk. Should I call the doctor? Should my belly feel this tight and hard for so long?