How does contraction feel?

I am 34w now and since yesterday night m feeling period cramps like pain and baby movements also feel painful and cramp type.. it’s not frequent only when I sit straight or I walk or stand while cooking and doing normal things.. should I go to doc today. There is no discharge also..but kind of discomfort in tummy.. as if I need to go to the bathroom. I had my first through c-sec 8 yrs back so I never felt any contractions m very scared. Are these symptoms of labour?