Ay, congrats on your second baby, mama! Braxton Hicks usually start around 6 months, so you might be feeling them na now at 7 months, a few of us noticed them more with our second pregnancy kasi alam na ng body mo what to expect. The contractions feel like your belly tightens and then relaxes, usually painless lang, and they're not consistent like real labor. Try staying hydrated, take a warm bath, or just sit down and relax when you feel them kasi usually napapawala sila with rest, one of my mum friends swears na pag nag-relax at nag-stretch lang siya, tumigil agad. If they become regular, painful, or may spotting, better check with your OB na para peace of mind lang.