Bleeding after sex, is it normal?

Hi momsh? Ask lang po sana ako if it is normal to bleed after having intercourse? I'm almost 4 mos. preggy. The blood is light red and that time lang naman ang bleeding thereafter spotting nalang, drop lang ata and light red pa din. My hubby got worried baka daw kasi napaano na ang bb namin but as I read articles normal lang naman daw po. Anyone here experienced it? How's your pregnancy journey po? #1stimemom #advicepls #pregnancy #firstbaby #pleasehelp