Talk to Gynecologist on Early Pregnancy

Hello. I had a miscarriage in Dec during my 4th/5th week of pregnancy. Doctor ruled it out as chemical pregnancy. Now today is my period date, did a home test and i could see a faint 2nd line so it seems positive again. I’m having cramps in my back, lower abdomen and legs since a week but felt pregnancy symptoms like last time and pretty scared this time because of previous experience. Plz guide me if i should take any pregnancy support medicine? And any extra care. I’m trying to rest to limit chances of miscarriage.